2021

                                        
    ***** 2021 JANUARY *****
 
 Calendar for Kitt Peak, west longitude (h.m.s) =   7 26 24, latitude (d.m) =  31 57.8
 Note that each line lists events of one night, spanning two calendar dates.  Rise/set times are given
 in Mountain time (  7 hr W), for  900 m above surroundings, in standard time all year.
 Moon coords. and illum. are for local midnight, even if moon is down.  Program: John Thorstensen, Dartmouth College.
 
   Date (eve/morn)      JDmid    LMSTmidn   ---------- Sun: ---------   LST twilight:  ------------- Moon: --------------
   (2021 at start)    (-2450000)            set  twi.end twi.beg rise    eve    morn    rise   set  %illum   RA      Dec
 
 Fri Jan 01/Sat Jan 02  9216.8    6 22 10   17 39  19 01   6 00  7 22    1 22  12 23   20 09  .....    89   9 37.5  18 53
 Sat Jan 02/Sun Jan 03  9217.8    6 26 07   17 39  19 01   6 00  7 22    1 27  12 28   21 13  .....    81  10 31.3  14 36
 
 Sun Jan 03/Mon Jan 04  9218.8    6 30 03   17 40  19 02   6 01  7 22    1 31  12 32   22 17  .....    72  11 23.3   9 31
 Mon Jan 04/Tue Jan 05  9219.8    6 34 00   17 41  19 03   6 01  7 23    1 36  12 36   23 20  .....    62  12 14.3   3 54
 Tue Jan 05/Wed Jan 06  9220.8    6 37 56   17 42  19 03   6 01  7 23    1 41  12 40    0 25  .....    50  13 05.0 - 1 57
 Wed Jan 06/Thu Jan 07  9221.8    6 41 53   17 42  19 04   6 01  7 23    1 45  12 44    1 30  .....    39  13 56.4 - 7 45
 Thu Jan 07/Fri Jan 08  9222.8    6 45 49   17 43  19 05   6 01  7 23    1 50  12 48    2 36  .....    28  14 49.6 -13 13
 Fri Jan 08/Sat Jan 09  9223.8    6 49 46   17 44  19 06   6 01  7 23    1 55  12 52    3 45  .....    19  15 45.2 -17 59
 Sat Jan 09/Sun Jan 10  9224.8    6 53 42   17 45  19 06   6 01  7 23    1 59  12 56    4 54  .....    11  16 43.6 -21 43
 
 Sun Jan 10/Mon Jan 11  9225.8    6 57 39   17 46  19 07   6 01  7 23    2 04  13 00    6 01  .....     5  17 44.3 -24 07
 Mon Jan 11/Tue Jan 12  9226.8    7 01 36   17 47  19 08   6 01  7 23    2 09  13 04    7 04  16 23     1  18 45.9 -24 59
 Tue Jan 12/Wed Jan 13  9227.8    7 05 32   17 48  19 09   6 01  7 22    2 13  13 08    8 00  17 25     0  19 46.8 -24 17
 Wed Jan 13/Thu Jan 14  9228.8    7 09 29   17 48  19 09   6 01  7 22    2 18  13 12   .....  18 29     1  20 45.2 -22 10
 Thu Jan 14/Fri Jan 15  9229.8    7 13 25   17 49  19 10   6 01  7 22    2 23  13 16   .....  19 33     5  21 40.1 -18 54
 Fri Jan 15/Sat Jan 16  9230.8    7 17 22   17 50  19 11   6 01  7 22    2 28  13 20   .....  20 35    11  22 31.4 -14 47
 Sat Jan 16/Sun Jan 17  9231.8    7 21 18   17 51  19 12   6 01  7 22    2 32  13 23   .....  21 35    18  23 19.4 -10 07
 
 Sun Jan 17/Mon Jan 18  9232.8    7 25 15   17 52  19 13   6 01  7 21    2 37  13 27   .....  22 32    26   0 05.0 - 5 09
 Mon Jan 18/Tue Jan 19  9233.8    7 29 11   17 53  19 13   6 01  7 21    2 42  13 31   .....  23 27    34   0 49.0 - 0 05
 Tue Jan 19/Wed Jan 20  9234.8    7 33 08   17 54  19 14   6 01  7 21    2 46  13 35   .....   0 21    44   1 32.4   4 55
 Wed Jan 20/Thu Jan 21  9235.8    7 37 05   17 55  19 15   6 00  7 20    2 51  13 38   .....   1 15    53   2 16.3   9 43
 Thu Jan 21/Fri Jan 22  9236.8    7 41 01   17 56  19 16   6 00  7 20    2 56  13 42   .....   2 10    63   3 01.4  14 09
 Fri Jan 22/Sat Jan 23  9237.8    7 44 58   17 56  19 16   6 00  7 20    3 01  13 46   .....   3 06    71   3 48.6  18 03
 Sat Jan 23/Sun Jan 24  9238.8    7 48 54   17 57  19 17   5 59  7 19    3 05  13 49   .....   4 03    80   4 38.5  21 15
 
 Sun Jan 24/Mon Jan 25  9239.8    7 52 51   17 58  19 18   5 59  7 19    3 10  13 53   .....   5 00    87   5 31.2  23 32
 Mon Jan 25/Tue Jan 26  9240.8    7 56 47   17 59  19 19   5 59  7 18    3 15  13 57   .....   5 56    93   6 26.7  24 40
 Tue Jan 26/Wed Jan 27  9241.8    8 00 44   18 00  19 20   5 58  7 18    3 20  14 00   15 54   6 49    97   7 24.0  24 30
 Wed Jan 27/Thu Jan 28  9242.8    8 04 40   18 01  19 20   5 58  7 17    3 24  14 04   16 53   7 37   100   8 21.9  22 56
 Thu Jan 28/Fri Jan 29  9243.8    8 08 37   18 02  19 21   5 58  7 17    3 29  14 07   17 56  .....   100   9 19.1  20 00
 Fri Jan 29/Sat Jan 30  9244.8    8 12 34   18 03  19 22   5 57  7 16    3 34  14 11   19 02  .....    97  10 14.8  15 53
 Sat Jan 30/Sun Jan 31  9245.8    8 16 30   18 04  19 23   5 57  7 15    3 39  14 14   20 07  .....    92  11 08.8  10 51
 
 Sun Jan 31/Mon Feb 01  9246.8    8 20 27   18 05  19 24   5 56  7 15    3 43  14 17   21 13  .....    85  12 01.3   5 11
 
                                            ***** 2021 FEBRUARY *****
 
 Calendar for Kitt Peak, west longitude (h.m.s) =   7 26 24, latitude (d.m) =  31 57.8
 Note that each line lists events of one night, spanning two calendar dates.  Rise/set times are given
 in Mountain time (  7 hr W), for  900 m above surroundings, in standard time all year.
 Moon coords. and illum. are for local midnight, even if moon is down.  Program: John Thorstensen, Dartmouth College.
 
   Date (eve/morn)      JDmid    LMSTmidn   ---------- Sun: ---------   LST twilight:  ------------- Moon: --------------
   (2021 at start)    (-2450000)            set  twi.end twi.beg rise    eve    morn    rise   set  %illum   RA      Dec
 
 Mon Feb 01/Tue Feb 02  9247.8    8 24 23   18 06  19 24   5 55  7 14    3 48  14 21   22 18  .....    76  12 52.9 - 0 47
 Tue Feb 02/Wed Feb 03  9248.8    8 28 20   18 06  19 25   5 55  7 13    3 53  14 24   23 23  .....    65  13 44.7 - 6 42
 Wed Feb 03/Thu Feb 04  9249.8    8 32 16   18 07  19 26   5 54  7 13    3 58  14 28    0 29  .....    54  14 37.4 -12 16
 Thu Feb 04/Fri Feb 05  9250.8    8 36 13   18 08  19 27   5 54  7 12    4 02  14 31    1 36  .....    43  15 32.0 -17 10
 Fri Feb 05/Sat Feb 06  9251.8    8 40 09   18 09  19 28   5 53  7 11    4 07  14 34    2 43  .....    32  16 28.8 -21 06
 Sat Feb 06/Sun Feb 07  9252.8    8 44 06   18 10  19 28   5 52  7 10    4 12  14 37    3 50  .....    22  17 27.8 -23 47
 
 Sun Feb 07/Mon Feb 08  9253.8    8 48 03   18 11  19 29   5 52  7 10    4 16  14 41    4 52  .....    14  18 27.9 -25 02
 Mon Feb 08/Tue Feb 09  9254.8    8 51 59   18 12  19 30   5 51  7 09    4 21  14 44    5 49  .....     7  19 27.8 -24 46
 Tue Feb 09/Wed Feb 10  9255.8    8 55 56   18 13  19 31   5 50  7 08    4 26  14 47    6 39  16 13     3  20 26.0 -23 05
 Wed Feb 10/Thu Feb 11  9256.8    8 59 52   18 14  19 31   5 49  7 07    4 31  14 50    7 22  17 17     0  21 21.4 -20 10
 Thu Feb 11/Fri Feb 12  9257.8    9 03 49   18 14  19 32   5 49  7 06    4 35  14 53   .....  18 20     0  22 13.6 -16 18
 Fri Feb 12/Sat Feb 13  9258.8    9 07 45   18 15  19 33   5 48  7 05    4 40  14 57   .....  19 21     2  23 02.6 -11 45
 Sat Feb 13/Sun Feb 14  9259.8    9 11 42   18 16  19 34   5 47  7 04    4 45  15 00   .....  20 19     6  23 49.0 - 6 49
 
 Sun Feb 14/Mon Feb 15  9260.8    9 15 38   18 17  19 34   5 46  7 03    4 49  15 03   .....  21 15    12   0 33.6 - 1 43
 Mon Feb 15/Tue Feb 16  9261.8    9 19 35   18 18  19 35   5 45  7 03    4 54  15 06   .....  22 10    19   1 17.3   3 22
 Tue Feb 16/Wed Feb 17  9262.8    9 23 32   18 19  19 36   5 44  7 02    4 59  15 09   .....  23 05    27   2 01.0   8 16
 Wed Feb 17/Thu Feb 18  9263.8    9 27 28   18 20  19 37   5 43  7 01    5 04  15 12   .....  23 59    35   2 45.4  12 50
 Thu Feb 18/Fri Feb 19  9264.8    9 31 25   18 20  19 38   5 43  7 00    5 08  15 15   .....   0 55    45   3 31.4  16 54
 Fri Feb 19/Sat Feb 20  9265.8    9 35 21   18 21  19 38   5 42  6 59    5 13  15 18   .....   1 51    54   4 19.7  20 20
 Sat Feb 20/Sun Feb 21  9266.8    9 39 18   18 22  19 39   5 41  6 57    5 18  15 21   .....   2 48    64   5 10.6  22 55
 
 Sun Feb 21/Mon Feb 22  9267.8    9 43 14   18 23  19 40   5 40  6 56    5 22  15 24   .....   3 44    73   6 04.3  24 28
 Mon Feb 22/Tue Feb 23  9268.8    9 47 11   18 24  19 41   5 39  6 55    5 27  15 27   .....   4 37    81   7 00.2  24 48
 Tue Feb 23/Wed Feb 24  9269.8    9 51 07   18 24  19 41   5 38  6 54    5 32  15 30   .....   5 28    89   7 57.5  23 47
 Wed Feb 24/Thu Feb 25  9270.8    9 55 04   18 25  19 42   5 36  6 53    5 36  15 32   .....   6 13    95   8 55.1  21 22
 Thu Feb 25/Fri Feb 26  9271.8    9 59 01   18 26  19 43   5 35  6 52    5 41  15 35   16 43   6 55    98   9 52.0  17 37
 Fri Feb 26/Sat Feb 27  9272.8   10 02 57   18 27  19 43   5 34  6 51    5 46  15 38   17 50   7 33   100  10 47.7  12 46
 Sat Feb 27/Sun Feb 28  9273.8   10 06 54   18 28  19 44   5 33  6 50    5 50  15 41   18 58  .....    99  11 42.0   7 05
 
 Sun Feb 28/Mon Mar 01  9274.8   10 10 50   18 28  19 45   5 32  6 49    5 55  15 44   20 05  .....    94  12 35.5   0 57
 
                                            ***** 2021 MARCH *****
 
 Calendar for Kitt Peak, west longitude (h.m.s) =   7 26 24, latitude (d.m) =  31 57.8
 Note that each line lists events of one night, spanning two calendar dates.  Rise/set times are given
 in Mountain time (  7 hr W), for  900 m above surroundings, in standard time all year.
 Moon coords. and illum. are for local midnight, even if moon is down.  Program: John Thorstensen, Dartmouth College.
 
   Date (eve/morn)      JDmid    LMSTmidn   ---------- Sun: ---------   LST twilight:  ------------- Moon: --------------
   (2021 at start)    (-2450000)            set  twi.end twi.beg rise    eve    morn    rise   set  %illum   RA      Dec
 
 Mon Mar 01/Tue Mar 02  9275.8   10 14 47   18 29  19 46   5 31  6 47    6 00  15 47   21 12  .....    88  13 29.0 - 5 17
 Tue Mar 02/Wed Mar 03  9276.8   10 18 43   18 30  19 46   5 30  6 46    6 04  15 49   22 20  .....    79  14 23.1 -11 12
 Wed Mar 03/Thu Mar 04  9277.8   10 22 40   18 31  19 47   5 29  6 45    6 09  15 52   23 28  .....    69  15 18.7 -16 27
 Thu Mar 04/Fri Mar 05  9278.8   10 26 36   18 31  19 48   5 27  6 44    6 14  15 55    0 36  .....    58  16 16.0 -20 43
 Fri Mar 05/Sat Mar 06  9279.8   10 30 33   18 32  19 49   5 26  6 43    6 18  15 58    1 43  .....    47  17 15.1 -23 41
 Sat Mar 06/Sun Mar 07  9280.8   10 34 30   18 33  19 49   5 25  6 41    6 23  16 00    2 47  .....    36  18 15.1 -25 14
 
 Sun Mar 07/Mon Mar 08  9281.8   10 38 26   18 34  19 50   5 24  6 40    6 28  16 03    3 45  .....    26  19 14.6 -25 16
 Mon Mar 08/Tue Mar 09  9282.8   10 42 23   18 34  19 51   5 23  6 39    6 33  16 06    4 36  .....    17  20 12.5 -23 52
 Tue Mar 09/Wed Mar 10  9283.8   10 46 19   18 35  19 52   5 21  6 38    6 37  16 09    5 20  .....    10  21 07.8 -21 13
 Wed Mar 10/Thu Mar 11  9284.8   10 50 16   18 36  19 52   5 20  6 37    6 42  16 11    5 58  .....     5  21 59.8 -17 35
 Thu Mar 11/Fri Mar 12  9285.8   10 54 12   18 36  19 53   5 19  6 35    6 47  16 14    6 32  17 10     2  22 48.9 -13 13
 Fri Mar 12/Sat Mar 13  9286.8   10 58 09   18 37  19 54   5 18  6 34    6 51  16 17    7 02  18 08     0  23 35.5 - 8 22
 Sat Mar 13/Sun Mar 14  9287.8   11 02 05   18 38  19 55   5 16  6 33    6 56  16 19   .....  19 05     1   0 20.2 - 3 17
 
 Sun Mar 14/Mon Mar 15  9288.8   11 06 02   18 39  19 55   5 15  6 32    7 01  16 22   .....  20 01     3   1 03.9   1 51
 Mon Mar 15/Tue Mar 16  9289.8   11 09 59   18 39  19 56   5 14  6 30    7 05  16 24   .....  20 55     7   1 47.4   6 52
 Tue Mar 16/Wed Mar 17  9290.8   11 13 55   18 40  19 57   5 12  6 29    7 10  16 27   .....  21 50    13   2 31.4  11 34
 Wed Mar 17/Thu Mar 18  9291.8   11 17 52   18 41  19 58   5 11  6 28    7 15  16 30   .....  22 46    20   3 16.7  15 49
 Thu Mar 18/Fri Mar 19  9292.8   11 21 48   18 41  19 58   5 10  6 26    7 19  16 32   .....  23 41    28   4 03.8  19 27
 Fri Mar 19/Sat Mar 20  9293.8   11 25 45   18 42  19 59   5 08  6 25    7 24  16 35   .....   0 38    37   4 53.1  22 18
 Sat Mar 20/Sun Mar 21  9294.8   11 29 41   18 43  20 00   5 07  6 24    7 29  16 37   .....   1 33    46   5 44.9  24 12
 
 Sun Mar 21/Mon Mar 22  9295.8   11 33 38   18 43  20 01   5 06  6 23    7 34  16 40   .....   2 27    56   6 38.8  24 58
 Mon Mar 22/Tue Mar 23  9296.8   11 37 34   18 44  20 01   5 04  6 21    7 38  16 43   .....   3 18    66   7 34.4  24 28
 Tue Mar 23/Wed Mar 24  9297.8   11 41 31   18 45  20 02   5 03  6 20    7 43  16 45   .....   4 05    75   8 30.6  22 37
 Wed Mar 24/Thu Mar 25  9298.8   11 45 28   18 45  20 03   5 01  6 19    7 48  16 48   .....   4 47    84   9 26.8  19 27
 Thu Mar 25/Fri Mar 26  9299.8   11 49 24   18 46  20 04   5 00  6 17    7 52  16 50   .....   5 26    91  10 22.4  15 03
 Fri Mar 26/Sat Mar 27  9300.8   11 53 21   18 47  20 05   4 59  6 16    7 57  16 53   .....   6 02    97  11 17.2   9 39
 Sat Mar 27/Sun Mar 28  9301.8   11 57 17   18 48  20 05   4 57  6 15    8 02  16 55   17 43   6 37   100  12 11.6   3 32
 
 Sun Mar 28/Mon Mar 29  9302.8   12 01 14   18 48  20 06   4 56  6 14    8 07  16 58   18 52   7 12    99  13 06.1 - 2 55
 Mon Mar 29/Tue Mar 30  9303.8   12 05 10   18 49  20 07   4 54  6 12    8 11  17 00   20 02  .....    96  14 01.6 - 9 16
 Tue Mar 30/Wed Mar 31  9304.8   12 09 07   18 50  20 08   4 53  6 11    8 16  17 03   21 12  .....    91  14 58.7 -15 04
 Wed Mar 31/Thu Apr 01  9305.8   12 13 03   18 50  20 09   4 52  6 10    8 21  17 05   22 24  .....    82  15 57.8 -19 55
 
                                            ***** 2021 APRIL *****
 
 Calendar for Kitt Peak, west longitude (h.m.s) =   7 26 24, latitude (d.m) =  31 57.8
 Note that each line lists events of one night, spanning two calendar dates.  Rise/set times are given
 in Mountain time (  7 hr W), for  900 m above surroundings, in standard time all year.
 Moon coords. and illum. are for local midnight, even if moon is down.  Program: John Thorstensen, Dartmouth College.
 
   Date (eve/morn)      JDmid    LMSTmidn   ---------- Sun: ---------   LST twilight:  ------------- Moon: --------------
   (2021 at start)    (-2450000)            set  twi.end twi.beg rise    eve    morn    rise   set  %illum   RA      Dec
 
 Thu Apr 01/Fri Apr 02  9306.8   12 17 00   18 51  20 09   4 50  6 09    8 26  17 08   23 34  .....    73  16 58.8 -23 26
 Fri Apr 02/Sat Apr 03  9307.8   12 20 57   18 52  20 10   4 49  6 07    8 30  17 10    0 41  .....    62  18 00.6 -25 25
 Sat Apr 03/Sun Apr 04  9308.8   12 24 53   18 52  20 11   4 47  6 06    8 35  17 13    1 42  .....    51  19 01.8 -25 47
 
 Sun Apr 04/Mon Apr 05  9309.8   12 28 50   18 53  20 12   4 46  6 05    8 40  17 16    2 35  .....    40  20 01.0 -24 39
 Mon Apr 05/Tue Apr 06  9310.8   12 32 46   18 54  20 13   4 45  6 03    8 45  17 18    3 21  .....    30  20 57.0 -22 12
 Tue Apr 06/Wed Apr 07  9311.8   12 36 43   18 54  20 14   4 43  6 02    8 50  17 21    4 00  .....    21  21 49.5 -18 43
 Wed Apr 07/Thu Apr 08  9312.8   12 40 39   18 55  20 14   4 42  6 01    8 54  17 23    4 35  .....    14  22 38.7 -14 29
 Thu Apr 08/Fri Apr 09  9313.8   12 44 36   18 56  20 15   4 40  6 00    8 59  17 26    5 05  .....     8  23 25.2 - 9 44
 Fri Apr 09/Sat Apr 10  9314.8   12 48 32   18 56  20 16   4 39  5 59    9 04  17 28    5 34  .....     3   0 09.8 - 4 41
 Sat Apr 10/Sun Apr 11  9315.8   12 52 29   18 57  20 17   4 37  5 57    9 09  17 31    6 01  17 54     1   0 53.2   0 27
 
 Sun Apr 11/Mon Apr 12  9316.8   12 56 26   18 58  20 18   4 36  5 56    9 14  17 33    6 28  18 48     0   1 36.4   5 31
 Mon Apr 12/Tue Apr 13  9317.8   13 00 22   18 58  20 19   4 35  5 55    9 19  17 36    6 57  19 43     1   2 19.9  10 20
 Tue Apr 13/Wed Apr 14  9318.8   13 04 19   18 59  20 20   4 33  5 54    9 23  17 38   .....  20 38     4   3 04.6  14 45
 Wed Apr 14/Thu Apr 15  9319.8   13 08 15   19 00  20 21   4 32  5 53    9 28  17 41   .....  21 34     9   3 51.0  18 34
 Thu Apr 15/Fri Apr 16  9320.8   13 12 12   19 01  20 22   4 30  5 51    9 33  17 43   .....  22 30    15   4 39.3  21 40
 Fri Apr 16/Sat Apr 17  9321.8   13 16 08   19 01  20 22   4 29  5 50    9 38  17 46   .....  23 26    22   5 29.9  23 50
 Sat Apr 17/Sun Apr 18  9322.8   13 20 05   19 02  20 23   4 28  5 49    9 43  17 49   .....   0 20    30   6 22.4  24 56
 
 Sun Apr 18/Mon Apr 19  9323.8   13 24 01   19 03  20 24   4 26  5 48    9 48  17 51   .....   1 11    39   7 16.3  24 51
 Mon Apr 19/Tue Apr 20  9324.8   13 27 58   19 03  20 25   4 25  5 47    9 53  17 54   .....   1 59    49   8 10.8  23 29
 Tue Apr 20/Wed Apr 21  9325.8   13 31 55   19 04  20 26   4 24  5 46    9 57  17 56   .....   2 42    60   9 05.4  20 52
 Wed Apr 21/Thu Apr 22  9326.8   13 35 51   19 05  20 27   4 22  5 45   10 02  17 59   .....   3 21    70   9 59.4  17 02
 Thu Apr 22/Fri Apr 23  9327.8   13 39 48   19 06  20 28   4 21  5 44   10 07  18 02   .....   3 57    80  10 52.9  12 08
 Fri Apr 23/Sat Apr 24  9328.8   13 43 44   19 06  20 29   4 20  5 42   10 12  18 04   .....   4 31    88  11 46.2   6 23
 Sat Apr 24/Sun Apr 25  9329.8   13 47 41   19 07  20 30   4 18  5 41   10 17  18 07   .....   5 05    95  12 39.8   0 04
 
 Sun Apr 25/Mon Apr 26  9330.8   13 51 37   19 08  20 31   4 17  5 40   10 22  18 09   17 36   5 41    99  13 34.8 - 6 27
 Mon Apr 26/Tue Apr 27  9331.8   13 55 34   19 08  20 32   4 16  5 39   10 27  18 12   18 47   6 19   100  14 31.8 -12 42
 Tue Apr 27/Wed Apr 28  9332.8   13 59 30   19 09  20 33   4 15  5 38   10 32  18 15   20 00  .....    98  15 31.6 -18 13
 Wed Apr 28/Thu Apr 29  9333.8   14 03 27   19 10  20 34   4 13  5 37   10 37  18 17   21 14  .....    93  16 34.0 -22 31
 Thu Apr 29/Fri Apr 30  9334.8   14 07 24   19 11  20 35   4 12  5 36   10 42  18 20   22 25  .....    85  17 38.3 -25 14
 Fri Apr 30/Sat May 01  9335.8   14 11 20   19 11  20 36   4 11  5 35   10 47  18 23   23 32  .....    76  18 42.6 -26 12
 
                                            ***** 2021 MAY *****
 
 Calendar for Kitt Peak, west longitude (h.m.s) =   7 26 24, latitude (d.m) =  31 57.8
 Note that each line lists events of one night, spanning two calendar dates.  Rise/set times are given
 in Mountain time (  7 hr W), for  900 m above surroundings, in standard time all year.
 Moon coords. and illum. are for local midnight, even if moon is down.  Program: John Thorstensen, Dartmouth College.
 
   Date (eve/morn)      JDmid    LMSTmidn   ---------- Sun: ---------   LST twilight:  ------------- Moon: --------------
   (2021 at start)    (-2450000)            set  twi.end twi.beg rise    eve    morn    rise   set  %illum   RA      Dec
 
 Sat May 01/Sun May 02  9336.8   14 15 17   19 12  20 37   4 10  5 34   10 52  18 26    0 30  .....    66  19 44.9 -25 27
 
 Sun May 02/Mon May 03  9337.8   14 19 13   19 13  20 38   4 08  5 34   10 57  18 28    1 20  .....    55  20 43.6 -23 16
 Mon May 03/Tue May 04  9338.8   14 23 10   19 13  20 39   4 07  5 33   11 01  18 31    2 02  .....    45  21 38.2 -19 55
 Tue May 04/Wed May 05  9339.8   14 27 06   19 14  20 40   4 06  5 32   11 06  18 34    2 38  .....    35  22 28.8 -15 45
 Wed May 05/Thu May 06  9340.8   14 31 03   19 15  20 41   4 05  5 31   11 11  18 37    3 09  .....    25  23 16.0 -11 02
 Thu May 06/Fri May 07  9341.8   14 34 59   19 16  20 42   4 04  5 30   11 16  18 39    3 38  .....    17   0 00.9 - 6 00
 Fri May 07/Sat May 08  9342.8   14 38 56   19 16  20 43   4 03  5 29   11 21  18 42    4 05  .....    11   0 44.3 - 0 52
 Sat May 08/Sun May 09  9343.8   14 42 53   19 17  20 44   4 01  5 28   11 26  18 45    4 32  .....     6   1 27.1   4 14
 
 Sun May 09/Mon May 10  9344.8   14 46 49   19 18  20 45   4 00  5 28   11 31  18 48    5 00  17 38     2   2 10.3   9 08
 Mon May 10/Tue May 11  9345.8   14 50 46   19 18  20 46   3 59  5 27   11 36  18 51    5 30  18 33     0   2 54.4  13 39
 Tue May 11/Wed May 12  9346.8   14 54 42   19 19  20 47   3 58  5 26   11 41  18 54    6 02  19 28     0   3 40.2  17 39
 Wed May 12/Thu May 13  9347.8   14 58 39   19 20  20 48   3 57  5 25   11 46  18 57   .....  20 25     2   4 28.0  20 57
 Thu May 13/Fri May 14  9348.8   15 02 35   19 21  20 49   3 56  5 25   11 51  19 00   .....  21 21     5   5 17.9  23 21
 Fri May 14/Sat May 15  9349.8   15 06 32   19 21  20 50   3 55  5 24   11 56  19 03   .....  22 16    10   6 09.7  24 44
 Sat May 15/Sun May 16  9350.8   15 10 28   19 22  20 51   3 54  5 23   12 01  19 06   .....  23 08    17   7 02.8  24 57
 
 Sun May 16/Mon May 17  9351.8   15 14 25   19 23  20 52   3 54  5 23   12 06  19 09   .....  23 56    25   7 56.4  23 57
 Mon May 17/Tue May 18  9352.8   15 18 22   19 23  20 53   3 53  5 22   12 11  19 12   .....   0 39    34   8 49.7  21 43
 Tue May 18/Wed May 19  9353.8   15 22 18   19 24  20 54   3 52  5 21   12 16  19 15   .....   1 19    44   9 42.4  18 21
 Wed May 19/Thu May 20  9354.8   15 26 15   19 25  20 55   3 51  5 21   12 20  19 18   .....   1 55    55  10 34.2  13 56
 Thu May 20/Fri May 21  9355.8   15 30 11   19 25  20 56   3 50  5 20   12 25  19 21   .....   2 28    66  11 25.5   8 39
 Fri May 21/Sat May 22  9356.8   15 34 08   19 26  20 57   3 49  5 20   12 30  19 24   .....   3 01    76  12 17.0   2 43
 Sat May 22/Sun May 23  9357.8   15 38 04   19 27  20 58   3 49  5 19   12 35  19 27   .....   3 35    85  13 09.6 - 3 36
 
 Sun May 23/Mon May 24  9358.8   15 42 01   19 27  20 58   3 48  5 19   12 40  19 30   .....   4 10    93  14 04.3 - 9 55
 Mon May 24/Tue May 25  9359.8   15 45 57   19 28  20 59   3 47  5 18   12 45  19 34   17 33   4 50    98  15 02.2 -15 49
 Tue May 25/Wed May 26  9360.8   15 49 54   19 29  21 00   3 46  5 18   12 50  19 37   18 47   5 36   100  16 03.6 -20 48
 Wed May 26/Thu May 27  9361.8   15 53 51   19 29  21 01   3 46  5 18   12 54  19 40   20 01   6 29    99  17 08.4 -24 22
 Thu May 27/Fri May 28  9362.8   15 57 47   19 30  21 02   3 45  5 17   12 59  19 44   21 12  .....    95  18 14.8 -26 12
 Fri May 28/Sat May 29  9363.8   16 01 44   19 31  21 03   3 45  5 17   13 04  19 47   22 16  .....    88  19 20.5 -26 09
 Sat May 29/Sun May 30  9364.8   16 05 40   19 31  21 04   3 44  5 17   13 09  19 50   23 12  .....    80  20 23.1 -24 25
 
 Sun May 30/Mon May 31  9365.8   16 09 37   19 32  21 04   3 44  5 16   13 14  19 54   23 59  .....    70  21 21.3 -21 18
 Mon May 31/Tue Jun 01  9366.8   16 13 33   19 32  21 05   3 43  5 16   13 18  19 57    0 38  .....    60  22 14.8 -17 12
 
                                            ***** 2021 JUNE *****
 
 Calendar for Kitt Peak, west longitude (h.m.s) =   7 26 24, latitude (d.m) =  31 57.8
 Note that each line lists events of one night, spanning two calendar dates.  Rise/set times are given
 in Mountain time (  7 hr W), for  900 m above surroundings, in standard time all year.
 Moon coords. and illum. are for local midnight, even if moon is down.  Program: John Thorstensen, Dartmouth College.
 
   Date (eve/morn)      JDmid    LMSTmidn   ---------- Sun: ---------   LST twilight:  ------------- Moon: --------------
   (2021 at start)    (-2450000)            set  twi.end twi.beg rise    eve    morn    rise   set  %illum   RA      Dec
 
 Tue Jun 01/Wed Jun 02  9367.8   16 17 30   19 33  21 06   3 43  5 16   13 23  20 01    1 11  .....    50  23 04.2 -12 29
 Wed Jun 02/Thu Jun 03  9368.8   16 21 26   19 33  21 07   3 42  5 16   13 28  20 04    1 41  .....    40  23 50.4 - 7 25
 Thu Jun 03/Fri Jun 04  9369.8   16 25 23   19 34  21 07   3 42  5 15   13 32  20 08    2 09  .....    30   0 34.6 - 2 12
 Fri Jun 04/Sat Jun 05  9370.8   16 29 20   19 35  21 08   3 42  5 15   13 37  20 11    2 36  .....    22   1 17.7   2 57
 Sat Jun 05/Sun Jun 06  9371.8   16 33 16   19 35  21 09   3 41  5 15   13 42  20 15    3 03  .....    15   2 00.7   7 56
 
 Sun Jun 06/Mon Jun 07  9372.8   16 37 13   19 36  21 10   3 41  5 15   13 46  20 19    3 32  .....     9   2 44.6  12 33
 Mon Jun 07/Tue Jun 08  9373.8   16 41 09   19 36  21 10   3 41  5 15   13 51  20 22    4 04  .....     4   3 29.9  16 42
 Tue Jun 08/Wed Jun 09  9374.8   16 45 06   19 36  21 11   3 40  5 15   13 55  20 26    4 39  18 19     1   4 17.2  20 10
 Wed Jun 09/Thu Jun 10  9375.8   16 49 02   19 37  21 11   3 40  5 15   14 00  20 30    5 19  19 15     0   5 06.7  22 48
 Thu Jun 10/Fri Jun 11  9376.8   16 52 59   19 37  21 12   3 40  5 15   14 04  20 34    6 05  20 11     1   5 58.2  24 25
 Fri Jun 11/Sat Jun 12  9377.8   16 56 55   19 38  21 12   3 40  5 15   14 09  20 38   .....  21 04     3   6 51.2  24 54
 Sat Jun 12/Sun Jun 13  9378.8   17 00 52   19 38  21 13   3 40  5 15   14 13  20 41   .....  21 54     7   7 44.7  24 10
 
 Sun Jun 13/Mon Jun 14  9379.8   17 04 49   19 39  21 13   3 40  5 15   14 18  20 45   .....  22 39    13   8 37.8  22 14
 Mon Jun 14/Tue Jun 15  9380.8   17 08 45   19 39  21 14   3 40  5 15   14 22  20 49   .....  23 19    21   9 30.1  19 08
 Tue Jun 15/Wed Jun 16  9381.8   17 12 42   19 39  21 14   3 40  5 15   14 26  20 53   .....  23 56    30  10 21.1  15 02
 Wed Jun 16/Thu Jun 17  9382.8   17 16 38   19 40  21 15   3 40  5 15   14 31  20 57   .....   0 29    40  11 11.1  10 06
 Thu Jun 17/Fri Jun 18  9383.8   17 20 35   19 40  21 15   3 40  5 15   14 35  21 01   .....   1 01    51  12 00.8   4 31
 Fri Jun 18/Sat Jun 19  9384.8   17 24 31   19 40  21 15   3 40  5 15   14 39  21 05   .....   1 33    62  12 51.0 - 1 28
 Sat Jun 19/Sun Jun 20  9385.8   17 28 28   19 40  21 15   3 41  5 16   14 43  21 10   .....   2 06    73  13 42.8 - 7 36
 
 Sun Jun 20/Mon Jun 21  9386.8   17 32 24   19 41  21 16   3 41  5 16   14 48  21 14   .....   2 43    83  14 37.3 -13 31
 Mon Jun 21/Tue Jun 22  9387.8   17 36 21   19 41  21 16   3 41  5 16   14 52  21 18   .....   3 24    91  15 35.5 -18 48
 Tue Jun 22/Wed Jun 23  9388.8   17 40 18   19 41  21 16   3 41  5 16   14 56  21 22   17 35   4 12    97  16 37.8 -23 00
 Wed Jun 23/Thu Jun 24  9389.8   17 44 14   19 41  21 16   3 42  5 17   15 00  21 26   18 47   5 09   100  17 43.4 -25 39
 Thu Jun 24/Fri Jun 25  9390.8   17 48 11   19 41  21 16   3 42  5 17   15 04  21 31   19 56   6 12   100  18 50.2 -26 28
 Fri Jun 25/Sat Jun 26  9391.8   17 52 07   19 41  21 16   3 42  5 17   15 08  21 35   20 57  .....    97  19 55.7 -25 26
 Sat Jun 26/Sun Jun 27  9392.8   17 56 04   19 41  21 16   3 43  5 18   15 12  21 39   21 49  .....    91  20 57.6 -22 47
 
 Sun Jun 27/Mon Jun 28  9393.8   18 00 00   19 42  21 16   3 43  5 18   15 16  21 44   22 33  .....    84  21 54.7 -18 55
 Mon Jun 28/Tue Jun 29  9394.8   18 03 57   19 42  21 16   3 44  5 18   15 20  21 48   23 10  .....    75  22 47.2 -14 13
 Tue Jun 29/Wed Jun 30  9395.8   18 07 53   19 42  21 16   3 44  5 19   15 24  21 53   23 42  .....    65  23 35.8 - 9 05
 Wed Jun 30/Thu Jul 01  9396.8   18 11 50   19 42  21 16   3 45  5 19   15 27  21 57    0 11  .....    55   0 21.6 - 3 45
 
                                            ***** 2021 JULY *****
 
 Calendar for Kitt Peak, west longitude (h.m.s) =   7 26 24, latitude (d.m) =  31 57.8
 Note that each line lists events of one night, spanning two calendar dates.  Rise/set times are given
 in Mountain time (  7 hr W), for  900 m above surroundings, in standard time all year.
 Moon coords. and illum. are for local midnight, even if moon is down.  Program: John Thorstensen, Dartmouth College.
 
   Date (eve/morn)      JDmid    LMSTmidn   ---------- Sun: ---------   LST twilight:  ------------- Moon: --------------
   (2021 at start)    (-2450000)            set  twi.end twi.beg rise    eve    morn    rise   set  %illum   RA      Dec
 
 Thu Jul 01/Fri Jul 02  9397.8   18 15 47   19 42  21 16   3 45  5 20   15 31  22 02    0 38  .....    46   1 05.8   1 33
 Fri Jul 02/Sat Jul 03  9398.8   18 19 43   19 41  21 16   3 46  5 20   15 35  22 06    1 06  .....    36   1 49.4   6 39
 Sat Jul 03/Sun Jul 04  9399.8   18 23 40   19 41  21 16   3 46  5 20   15 39  22 11    1 34  .....    27   2 33.3  11 25
 
 Sun Jul 04/Mon Jul 05  9400.8   18 27 36   19 41  21 15   3 47  5 21   15 42  22 15    2 05  .....    19   3 18.4  15 43
 Mon Jul 05/Tue Jul 06  9401.8   18 31 33   19 41  21 15   3 48  5 21   15 46  22 20    2 39  .....    12   4 05.3  19 22
 Tue Jul 06/Wed Jul 07  9402.8   18 35 29   19 41  21 15   3 48  5 22   15 50  22 24    3 17  .....     7   4 54.4  22 13
 Wed Jul 07/Thu Jul 08  9403.8   18 39 26   19 41  21 14   3 49  5 22   15 53  22 29    4 01  18 04     3   5 45.7  24 06
 Thu Jul 08/Fri Jul 09  9404.8   18 43 22   19 41  21 14   3 50  5 23   15 57  22 34    4 51  18 59     1   6 38.6  24 51
 Fri Jul 09/Sat Jul 10  9405.8   18 47 19   19 40  21 13   3 50  5 23   16 00  22 38    5 46  19 50     0   7 32.4  24 23
 Sat Jul 10/Sun Jul 11  9406.8   18 51 16   19 40  21 13   3 51  5 24   16 04  22 43   .....  20 37     2   8 26.0  22 40
 
 Sun Jul 11/Mon Jul 12  9407.8   18 55 12   19 40  21 12   3 52  5 25   16 07  22 48   .....  21 20     5   9 18.8  19 47
 Mon Jul 12/Tue Jul 13  9408.8   18 59 09   19 39  21 12   3 53  5 25   16 11  22 52   .....  21 57    11  10 10.1  15 52
 Tue Jul 13/Wed Jul 14  9409.8   19 03 05   19 39  21 11   3 53  5 26   16 14  22 57   .....  22 32    18  11 00.1  11 07
 Wed Jul 14/Thu Jul 15  9410.8   19 07 02   19 39  21 11   3 54  5 26   16 17  23 02   .....  23 04    27  11 49.2   5 42
 Thu Jul 15/Fri Jul 16  9411.8   19 10 58   19 38  21 10   3 55  5 27   16 21  23 07   .....  23 35    37  12 38.3 - 0 06
 Fri Jul 16/Sat Jul 17  9412.8   19 14 55   19 38  21 09   3 56  5 27   16 24  23 12   .....   0 07    48  13 28.2 - 6 03
 Sat Jul 17/Sun Jul 18  9413.8   19 18 51   19 37  21 09   3 57  5 28   16 27  23 16   .....   0 41    59  14 20.1 -11 52
 
 Sun Jul 18/Mon Jul 19  9414.8   19 22 48   19 37  21 08   3 58  5 29   16 30  23 21   .....   1 19    70  15 15.1 -17 12
 Mon Jul 19/Tue Jul 20  9415.8   19 26 45   19 36  21 07   3 59  5 29   16 33  23 26   .....   2 02    81  16 13.8 -21 40
 Tue Jul 20/Wed Jul 21  9416.8   19 30 41   19 36  21 06   4 00  5 30   16 37  23 31   .....   2 54    89  17 16.3 -24 50
 Wed Jul 21/Thu Jul 22  9417.8   19 34 38   19 35  21 06   4 00  5 31   16 40  23 36   17 36   3 53    95  18 21.5 -26 22
 Thu Jul 22/Fri Jul 23  9418.8   19 38 34   19 35  21 05   4 01  5 31   16 43  23 41   18 40   4 58    99  19 27.0 -26 06
 Fri Jul 23/Sat Jul 24  9419.8   19 42 31   19 34  21 04   4 02  5 32   16 46  23 45   19 36   6 06   100  20 30.6 -24 06
 Sat Jul 24/Sun Jul 25  9420.8   19 46 27   19 34  21 03   4 03  5 33   16 49  23 50   20 24  .....    98  21 30.3 -20 38
 
 Sun Jul 25/Mon Jul 26  9421.8   19 50 24   19 33  21 02   4 04  5 33   16 52  23 55   21 04  .....    94  22 25.6 -16 09
 Mon Jul 26/Tue Jul 27  9422.8   19 54 20   19 32  21 01   4 05  5 34   16 55   0 00   21 39  .....    87  23 16.8 -11 01
 Tue Jul 27/Wed Jul 28  9423.8   19 58 17   19 32  21 00   4 06  5 35   16 58   0 05   22 10  .....    80   0 04.7 - 5 34
 Wed Jul 28/Thu Jul 29  9424.8   20 02 14   19 31  20 59   4 07  5 35   17 01   0 10   22 39  .....    71   0 50.5 - 0 06
 Thu Jul 29/Fri Jul 30  9425.8   20 06 10   19 30  20 58   4 08  5 36   17 04   0 15   23 06  .....    62   1 35.1   5 13
 Fri Jul 30/Sat Jul 31  9426.8   20 10 07   19 29  20 57   4 09  5 37   17 07   0 20   23 35  .....    52   2 19.6  10 12
 Sat Jul 31/Sun Aug 01  9427.8   20 14 03   19 29  20 56   4 10  5 37   17 10   0 24    0 04  .....    42   3 04.8  14 42
 
                                            ***** 2021 AUGUST *****
 
 Calendar for Kitt Peak, west longitude (h.m.s) =   7 26 24, latitude (d.m) =  31 57.8
 Note that each line lists events of one night, spanning two calendar dates.  Rise/set times are given
 in Mountain time (  7 hr W), for  900 m above surroundings, in standard time all year.
 Moon coords. and illum. are for local midnight, even if moon is down.  Program: John Thorstensen, Dartmouth College.
 
   Date (eve/morn)      JDmid    LMSTmidn   ---------- Sun: ---------   LST twilight:  ------------- Moon: --------------
   (2021 at start)    (-2450000)            set  twi.end twi.beg rise    eve    morn    rise   set  %illum   RA      Dec
 
 
 Sun Aug 01/Mon Aug 02  9428.8   20 18 00   19 28  20 55   4 11  5 38   17 12   0 29    0 37  .....    33   3 51.5  18 34
 Mon Aug 02/Tue Aug 03  9429.8   20 21 56   19 27  20 54   4 12  5 39   17 15   0 34    1 13  .....    25   4 40.1  21 40
 Tue Aug 03/Wed Aug 04  9430.8   20 25 53   19 26  20 53   4 13  5 39   17 18   0 39    1 55  .....    17   5 30.9  23 49
 Wed Aug 04/Thu Aug 05  9431.8   20 29 49   19 25  20 52   4 14  5 40   17 21   0 44    2 43  .....    10   6 23.6  24 52
 Thu Aug 05/Fri Aug 06  9432.8   20 33 46   19 24  20 50   4 15  5 41   17 24   0 49    3 37  17 44     5   7 17.4  24 43
 Fri Aug 06/Sat Aug 07  9433.8   20 37 43   19 23  20 49   4 15  5 41   17 26   0 54    4 35  18 33     2   8 11.6  23 18
 Sat Aug 07/Sun Aug 08  9434.8   20 41 39   19 23  20 48   4 16  5 42   17 29   0 59    5 37  19 17     0   9 05.1  20 39
 
 Sun Aug 08/Mon Aug 09  9435.8   20 45 36   19 22  20 47   4 17  5 43   17 32   1 04    6 40  19 57     1   9 57.5  16 54
 Mon Aug 09/Tue Aug 10  9436.8   20 49 32   19 21  20 46   4 18  5 43   17 35   1 09   .....  20 33     3  10 48.3  12 14
 Tue Aug 10/Wed Aug 11  9437.8   20 53 29   19 20  20 44   4 19  5 44   17 37   1 13   .....  21 06     8  11 38.1   6 52
 Wed Aug 11/Thu Aug 12  9438.8   20 57 25   19 19  20 43   4 20  5 45   17 40   1 18   .....  21 37    15  12 27.3   1 04
 Thu Aug 12/Fri Aug 13  9439.8   21 01 22   19 18  20 42   4 21  5 45   17 43   1 23   .....  22 09    24  13 16.9 - 4 53
 Fri Aug 13/Sat Aug 14  9440.8   21 05 18   19 17  20 40   4 22  5 46   17 45   1 28   .....  22 42    34  14 07.9 -10 43
 Sat Aug 14/Sun Aug 15  9441.8   21 09 15   19 16  20 39   4 23  5 47   17 48   1 33   .....  23 18    45  15 01.2 -16 06
 
 Sun Aug 15/Mon Aug 16  9442.8   21 13 12   19 15  20 38   4 24  5 47   17 50   1 38   .....  23 59    57  15 57.6 -20 42
 Mon Aug 16/Tue Aug 17  9443.8   21 17 08   19 13  20 37   4 25  5 48   17 53   1 43   .....   0 46    68  16 57.3 -24 08
 Tue Aug 17/Wed Aug 18  9444.8   21 21 05   19 12  20 35   4 26  5 48   17 56   1 47   .....   1 41    78  17 59.9 -26 07
 Wed Aug 18/Thu Aug 19  9445.8   21 25 01   19 11  20 34   4 27  5 49   17 58   1 52   .....   2 42    87  19 03.6 -26 25
 Thu Aug 19/Fri Aug 20  9446.8   21 28 58   19 10  20 32   4 27  5 50   18 01   1 57   17 26   3 48    94  20 06.6 -25 01
 Fri Aug 20/Sat Aug 21  9447.8   21 32 54   19 09  20 31   4 28  5 50   18 03   2 02   18 16   4 55    98  21 06.8 -22 06
 Sat Aug 21/Sun Aug 22  9448.8   21 36 51   19 08  20 30   4 29  5 51   18 06   2 07   18 59   6 01   100  22 03.3 -17 57
 
 Sun Aug 22/Mon Aug 23  9449.8   21 40 47   19 07  20 28   4 30  5 52   18 09   2 12   19 35  .....    99  22 56.1 -12 59
 Mon Aug 23/Tue Aug 24  9450.8   21 44 44   19 06  20 27   4 31  5 52   18 11   2 16   20 08  .....    96  23 45.5 - 7 33
 Tue Aug 24/Wed Aug 25  9451.8   21 48 41   19 04  20 26   4 32  5 53   18 14   2 21   20 37  .....    91   0 32.6 - 1 57
 Wed Aug 25/Thu Aug 26  9452.8   21 52 37   19 03  20 24   4 33  5 54   18 16   2 26   21 06  .....    85   1 18.3   3 34
 Thu Aug 26/Fri Aug 27  9453.8   21 56 34   19 02  20 23   4 34  5 54   18 19   2 31   21 34  .....    77   2 03.5   8 48
 Fri Aug 27/Sat Aug 28  9454.8   22 00 30   19 01  20 21   4 34  5 55   18 21   2 36   22 03  .....    68   2 49.0  13 34
 Sat Aug 28/Sun Aug 29  9455.8   22 04 27   19 00  20 20   4 35  5 56   18 24   2 40   22 34  .....    59   3 35.7  17 43
 
 Sun Aug 29/Mon Aug 30  9456.8   22 08 23   18 58  20 18   4 36  5 56   18 26   2 45   23 09  .....    49   4 24.1  21 06
 Mon Aug 30/Tue Aug 31  9457.8   22 12 20   18 57  20 17   4 37  5 57   18 29   2 50   23 49  .....    40   5 14.4  23 34
 Tue Aug 31/Wed Sep 01  9458.8   22 16 16   18 56  20 16   4 38  5 57   18 31   2 55    0 34  .....    31   6 06.5  24 58
 
                                            ***** 2021 SEPTEMBER *****
 
 Calendar for Kitt Peak, west longitude (h.m.s) =   7 26 24, latitude (d.m) =  31 57.8
 Note that each line lists events of one night, spanning two calendar dates.  Rise/set times are given
 in Mountain time (  7 hr W), for  900 m above surroundings, in standard time all year.
 Moon coords. and illum. are for local midnight, even if moon is down.  Program: John Thorstensen, Dartmouth College.
 
   Date (eve/morn)      JDmid    LMSTmidn   ---------- Sun: ---------   LST twilight:  ------------- Moon: --------------
   (2021 at start)    (-2450000)            set  twi.end twi.beg rise    eve    morn    rise   set  %illum   RA      Dec
 
 Wed Sep 01/Thu Sep 02  9459.8   22 20 13   18 55  20 14   4 38  5 58   18 34   2 59    1 25  .....    22   7 00.1  25 10
 Thu Sep 02/Fri Sep 03  9460.8   22 24 10   18 53  20 13   4 39  5 59   18 36   3 04    2 22  .....    15   7 54.2  24 08
 Fri Sep 03/Sat Sep 04  9461.8   22 28 06   18 52  20 11   4 40  5 59   18 39   3 09    3 22  17 11     8   8 48.1  21 50
 Sat Sep 04/Sun Sep 05  9462.8   22 32 03   18 51  20 10   4 41  6 00   18 41   3 14    4 25  17 53     4   9 41.1  18 21
 
 Sun Sep 05/Mon Sep 06  9463.8   22 35 59   18 49  20 08   4 42  6 00   18 44   3 18    5 30  18 30     1  10 32.9  13 51
 Mon Sep 06/Tue Sep 07  9464.8   22 39 56   18 48  20 07   4 42  6 01   18 46   3 23    6 34  19 05     0  11 23.6   8 33
 Tue Sep 07/Wed Sep 08  9465.8   22 43 52   18 47  20 05   4 43  6 02   18 49   3 28   .....  19 37     2  12 13.7   2 42
 Wed Sep 08/Thu Sep 09  9466.8   22 47 49   18 46  20 04   4 44  6 02   18 51   3 32   .....  20 10     6  13 04.0 - 3 24
 Thu Sep 09/Fri Sep 10  9467.8   22 51 45   18 44  20 02   4 45  6 03   18 54   3 37   .....  20 43    13  13 55.3 - 9 25
 Fri Sep 10/Sat Sep 11  9468.8   22 55 42   18 43  20 01   4 45  6 04   18 56   3 42   .....  21 18    22  14 48.6 -15 02
 Sat Sep 11/Sun Sep 12  9469.8   22 59 39   18 42  20 00   4 46  6 04   18 59   3 47   .....  21 58    32  15 44.5 -19 52
 
 Sun Sep 12/Mon Sep 13  9470.8   23 03 35   18 40  19 58   4 47  6 05   19 01   3 51   .....  22 43    43  16 43.3 -23 35
 Mon Sep 13/Tue Sep 14  9471.8   23 07 32   18 39  19 57   4 48  6 05   19 04   3 56   .....  23 35    54  17 44.6 -25 53
 Tue Sep 14/Wed Sep 15  9472.8   23 11 28   18 38  19 55   4 48  6 06   19 06   4 01   .....   0 34    65  18 47.0 -26 35
 Wed Sep 15/Thu Sep 16  9473.8   23 15 25   18 36  19 54   4 49  6 07   19 09   4 05   .....   1 37    76  19 48.8 -25 37
 Thu Sep 16/Fri Sep 17  9474.8   23 19 21   18 35  19 52   4 50  6 07   19 11   4 10   .....   2 43    84  20 48.4 -23 08
 Fri Sep 17/Sat Sep 18  9475.8   23 23 18   18 34  19 51   4 50  6 08   19 14   4 15   16 56   3 48    91  21 44.8 -19 23
 Sat Sep 18/Sun Sep 19  9476.8   23 27 14   18 32  19 50   4 51  6 08   19 16   4 19   17 34   4 52    96  22 37.7 -14 42
 
 Sun Sep 19/Mon Sep 20  9477.8   23 31 11   18 31  19 48   4 52  6 09   19 19   4 24   18 07   5 52    99  23 27.6 - 9 25
 Mon Sep 20/Tue Sep 21  9478.8   23 35 08   18 30  19 47   4 53  6 10   19 21   4 28   18 37   6 51   100   0 15.1 - 3 49
 Tue Sep 21/Wed Sep 22  9479.8   23 39 04   18 28  19 45   4 53  6 10   19 24   4 33   19 06  .....    98   1 01.2   1 48
 Wed Sep 22/Thu Sep 23  9480.8   23 43 01   18 27  19 44   4 54  6 11   19 26   4 38   19 34  .....    95   1 46.7   7 14
 Thu Sep 23/Fri Sep 24  9481.8   23 46 57   18 26  19 43   4 55  6 12   19 29   4 42   20 02  .....    89   2 32.5  12 16
 Fri Sep 24/Sat Sep 25  9482.8   23 50 54   18 24  19 41   4 55  6 12   19 31   4 47   20 33  .....    83   3 19.2  16 44
 Sat Sep 25/Sun Sep 26  9483.8   23 54 50   18 23  19 40   4 56  6 13   19 34   4 52   21 06  .....    75   4 07.4  20 26
 
 Sun Sep 26/Mon Sep 27  9484.8   23 58 47   18 22  19 38   4 57  6 13   19 36   4 56   21 44  .....    66   4 57.4  23 15
 Mon Sep 27/Tue Sep 28  9485.8    0 02 43   18 20  19 37   4 57  6 14   19 39   5 01   22 26  .....    57   5 49.0  25 01
 Tue Sep 28/Wed Sep 29  9486.8    0 06 40   18 19  19 36   4 58  6 15   19 42   5 06   23 14  .....    47   6 42.0  25 38
 Wed Sep 29/Thu Sep 30  9487.8    0 10 37   18 18  19 34   4 59  6 15   19 44   5 10    0 08  .....    38   7 35.7  25 00
 Thu Sep 30/Fri Oct 01  9488.8    0 14 33   18 17  19 33   4 59  6 16   19 47   5 15    1 06  .....    28   8 29.3  23 07
 
                                            ***** 2021 OCTOBER *****
 
 Calendar for Kitt Peak, west longitude (h.m.s) =   7 26 24, latitude (d.m) =  31 57.8
 Note that each line lists events of one night, spanning two calendar dates.  Rise/set times are given
 in Mountain time (  7 hr W), for  900 m above surroundings, in standard time all year.
 Moon coords. and illum. are for local midnight, even if moon is down.  Program: John Thorstensen, Dartmouth College.
 
   Date (eve/morn)      JDmid    LMSTmidn   ---------- Sun: ---------   LST twilight:  ------------- Moon: --------------
   (2021 at start)    (-2450000)            set  twi.end twi.beg rise    eve    morn    rise   set  %illum   RA      Dec
 
 Fri Oct 01/Sat Oct 02  9489.8    0 18 30   18 15  19 32   5 00  6 17   19 50   5 19    2 08  .....    20   9 22.2  20 03
 Sat Oct 02/Sun Oct 03  9490.8    0 22 26   18 14  19 30   5 01  6 17   19 52   5 24    3 11  .....    12  10 14.1  15 53
 
 Sun Oct 03/Mon Oct 04  9491.8    0 26 23   18 13  19 29   5 01  6 18   19 55   5 29    4 16  17 01     6  11 05.1  10 49
 Mon Oct 04/Tue Oct 05  9492.8    0 30 19   18 11  19 28   5 02  6 19   19 57   5 33    5 21  17 34     2  11 55.7   5 03
 Tue Oct 05/Wed Oct 06  9493.8    0 34 16   18 10  19 27   5 03  6 19   20 00   5 38    6 27  18 07     0  12 46.4 - 1 08
 Wed Oct 06/Thu Oct 07  9494.8    0 38 12   18 09  19 25   5 03  6 20   20 03   5 42    7 35  18 40     1  13 38.2 - 7 23
 Thu Oct 07/Fri Oct 08  9495.8    0 42 09   18 08  19 24   5 04  6 21   20 06   5 47   .....  19 15     5  14 32.0 -13 21
 Fri Oct 08/Sat Oct 09  9496.8    0 46 06   18 06  19 23   5 05  6 21   20 08   5 52   .....  19 54    11  15 28.5 -18 37
 Sat Oct 09/Sun Oct 10  9497.8    0 50 02   18 05  19 22   5 05  6 22   20 11   5 56   .....  20 39    19  16 27.8 -22 47
 
 Sun Oct 10/Mon Oct 11  9498.8    0 53 59   18 04  19 21   5 06  6 23   20 14   6 01   .....  21 30    29  17 29.6 -25 32
 Mon Oct 11/Tue Oct 12  9499.8    0 57 55   18 03  19 19   5 07  6 23   20 17   6 05   .....  22 27    40  18 32.5 -26 37
 Tue Oct 12/Wed Oct 13  9500.8    1 01 52   18 02  19 18   5 07  6 24   20 19   6 10   .....  23 30    51  19 34.6 -26 02
 Wed Oct 13/Thu Oct 14  9501.8    1 05 48   18 00  19 17   5 08  6 25   20 22   6 15   .....   0 35    62  20 34.4 -23 53
 Thu Oct 14/Fri Oct 15  9502.8    1 09 45   17 59  19 16   5 09  6 26   20 25   6 19   .....   1 40    72  21 30.7 -20 27
 Fri Oct 15/Sat Oct 16  9503.8    1 13 41   17 58  19 15   5 09  6 26   20 28   6 24   .....   2 43    81  22 23.5 -16 02
 Sat Oct 16/Sun Oct 17  9504.8    1 17 38   17 57  19 14   5 10  6 27   20 31   6 29   .....   3 44    89  23 13.1 -10 56
 
 Sun Oct 17/Mon Oct 18  9505.8    1 21 35   17 56  19 13   5 11  6 28   20 33   6 33   16 39   4 43    94   0 00.4 - 5 28
 Mon Oct 18/Tue Oct 19  9506.8    1 25 31   17 55  19 12   5 11  6 28   20 36   6 38   17 08   5 40    98   0 46.2   0 09
 Tue Oct 19/Wed Oct 20  9507.8    1 29 28   17 54  19 11   5 12  6 29   20 39   6 42   17 35   6 36   100   1 31.4   5 39
 Wed Oct 20/Thu Oct 21  9508.8    1 33 24   17 53  19 10   5 13  6 30   20 42   6 47   18 03   7 33   100   2 16.9  10 52
 Thu Oct 21/Fri Oct 22  9509.8    1 37 21   17 52  19 09   5 14  6 31   20 45   6 52   18 33  .....    97   3 03.3  15 35
 Fri Oct 22/Sat Oct 23  9510.8    1 41 17   17 50  19 08   5 14  6 31   20 48   6 56   19 05  .....    93   3 51.3  19 36
 Sat Oct 23/Sun Oct 24  9511.8    1 45 14   17 49  19 07   5 15  6 32   20 51   7 01   19 41  .....    88   4 41.0  22 46
 
 Sun Oct 24/Mon Oct 25  9512.8    1 49 10   17 48  19 06   5 16  6 33   20 54   7 06   20 21  .....    81   5 32.4  24 54
 Mon Oct 25/Tue Oct 26  9513.8    1 53 07   17 47  19 05   5 16  6 34   20 57   7 10   21 07  .....    73   6 25.1  25 54
 Tue Oct 26/Wed Oct 27  9514.8    1 57 04   17 46  19 04   5 17  6 35   21 00   7 15   21 58  .....    64   7 18.5  25 41
 Wed Oct 27/Thu Oct 28  9515.8    2 01 00   17 45  19 03   5 18  6 35   21 03   7 20   22 53  .....    55   8 11.6  24 14
 Thu Oct 28/Fri Oct 29  9516.8    2 04 57   17 45  19 02   5 18  6 36   21 06   7 24   23 52  .....    45   9 04.1  21 35
 Fri Oct 29/Sat Oct 30  9517.8    2 08 53   17 44  19 01   5 19  6 37   21 09   7 29    0 53  .....    35   9 55.4  17 51
 Sat Oct 30/Sun Oct 31  9518.8    2 12 50   17 43  19 01   5 20  6 38   21 13   7 34    1 56  .....    25  10 45.7  13 10
 
 Sun Oct 31/Mon Nov 01  9519.8    2 16 46   17 42  19 00   5 21  6 39   21 16   7 38    3 00  .....    16  11 35.6   7 42
 
                                            ***** 2021 NOVEMBER *****
 
 Calendar for Kitt Peak, west longitude (h.m.s) =   7 26 24, latitude (d.m) =  31 57.8
 Note that each line lists events of one night, spanning two calendar dates.  Rise/set times are given
 in Mountain time (  7 hr W), for  900 m above surroundings, in standard time all year.
 Moon coords. and illum. are for local midnight, even if moon is down.  Program: John Thorstensen, Dartmouth College.
 
   Date (eve/morn)      JDmid    LMSTmidn   ---------- Sun: ---------   LST twilight:  ------------- Moon: --------------
   (2021 at start)    (-2450000)            set  twi.end twi.beg rise    eve    morn    rise   set  %illum   RA      Dec
 
 Mon Nov 01/Tue Nov 02  9520.8    2 20 43   17 41  18 59   5 21  6 39   21 19   7 43    4 05  16 02     9  12 25.6   1 41
 Tue Nov 02/Wed Nov 03  9521.8    2 24 39   17 40  18 58   5 22  6 40   21 22   7 48    5 12  16 34     4  13 16.7 - 4 36
 Wed Nov 03/Thu Nov 04  9522.8    2 28 36   17 39  18 58   5 23  6 41   21 25   7 52    6 22  17 08     1  14 09.9 -10 49
 Thu Nov 04/Fri Nov 05  9523.8    2 32 33   17 39  18 57   5 23  6 42   21 29   7 57    7 34  17 46     0  15 06.2 -16 32
 Fri Nov 05/Sat Nov 06  9524.8    2 36 29   17 38  18 56   5 24  6 43   21 32   8 02   .....  18 29     3  16 05.8 -21 19
 Sat Nov 06/Sun Nov 07  9525.8    2 40 26   17 37  18 56   5 25  6 44   21 35   8 06   .....  19 18     8  17 08.6 -24 43
 
 Sun Nov 07/Mon Nov 08  9526.8    2 44 22   17 36  18 55   5 26  6 44   21 38   8 11   .....  20 16    16  18 13.2 -26 25
 Mon Nov 08/Tue Nov 09  9527.8    2 48 19   17 36  18 54   5 26  6 45   21 42   8 16   .....  21 19    25  19 17.5 -26 20
 Tue Nov 09/Wed Nov 10  9528.8    2 52 15   17 35  18 54   5 27  6 46   21 45   8 20   .....  22 26    36  20 19.2 -24 33
 Wed Nov 10/Thu Nov 11  9529.8    2 56 12   17 34  18 53   5 28  6 47   21 49   8 25   .....  23 33    47  21 17.2 -21 22
 Thu Nov 11/Fri Nov 12  9530.8    3 00 08   17 34  18 53   5 29  6 48   21 52   8 30   .....   0 37    57  22 11.0 -17 08
 Fri Nov 12/Sat Nov 13  9531.8    3 04 05   17 33  18 52   5 29  6 49   21 55   8 34   .....   1 38    68  23 01.1 -12 12
 Sat Nov 13/Sun Nov 14  9532.8    3 08 02   17 32  18 52   5 30  6 50   21 59   8 39   .....   2 37    77  23 48.3 - 6 50
 
 Sun Nov 14/Mon Nov 15  9533.8    3 11 58   17 32  18 51   5 31  6 51   22 02   8 44   .....   3 34    85   0 33.8 - 1 17
 Mon Nov 15/Tue Nov 16  9534.8    3 15 55   17 31  18 51   5 32  6 51   22 06   8 48   .....   4 30    91   1 18.5   4 13
 Tue Nov 16/Wed Nov 17  9535.8    3 19 51   17 31  18 51   5 32  6 52   22 10   8 53   16 06   5 26    96   2 03.3   9 30
 Wed Nov 17/Thu Nov 18  9536.8    3 23 48   17 30  18 50   5 33  6 53   22 13   8 58   16 35   6 22    99   2 49.1  14 22
 Thu Nov 18/Fri Nov 19  9537.8    3 27 44   17 30  18 50   5 34  6 54   22 17   9 03   17 06   7 19   100   3 36.5  18 38
 Fri Nov 19/Sat Nov 20  9538.8    3 31 41   17 30  18 50   5 35  6 55   22 20   9 07   17 40  .....    99   4 25.8  22 05
 Sat Nov 20/Sun Nov 21  9539.8    3 35 37   17 29  18 49   5 35  6 56   22 24   9 12   18 19  .....    97   5 17.0  24 34
 
 Sun Nov 21/Mon Nov 22  9540.8    3 39 34   17 29  18 49   5 36  6 57   22 28   9 17   19 03  .....    92   6 09.7  25 55
 Mon Nov 22/Tue Nov 23  9541.8    3 43 31   17 28  18 49   5 37  6 57   22 32   9 21   19 52  .....    87   7 03.1  26 04
 Tue Nov 23/Wed Nov 24  9542.8    3 47 27   17 28  18 49   5 38  6 58   22 35   9 26   20 45  .....    79   7 56.4  24 58
 Wed Nov 24/Thu Nov 25  9543.8    3 51 24   17 28  18 49   5 38  6 59   22 39   9 31   21 42  .....    71   8 48.7  22 41
 Thu Nov 25/Fri Nov 26  9544.8    3 55 20   17 28  18 48   5 39  7 00   22 43   9 35   22 42  .....    62   9 39.7  19 19
 Fri Nov 26/Sat Nov 27  9545.8    3 59 17   17 27  18 48   5 40  7 01   22 47   9 40   23 42  .....    52  10 29.3  15 00
 Sat Nov 27/Sun Nov 28  9546.8    4 03 13   17 27  18 48   5 41  7 02   22 51   9 45    0 43  .....    41  11 17.9   9 54
 
 Sun Nov 28/Mon Nov 29  9547.8    4 07 10   17 27  18 48   5 41  7 03   22 54   9 50    1 45  .....    31  12 06.4   4 13
 Mon Nov 29/Tue Nov 30  9548.8    4 11 06   17 27  18 48   5 42  7 03   22 58   9 54    2 49  .....    21  12 55.7 - 1 51
 Tue Nov 30/Wed Dec 01  9549.8    4 15 03   17 27  18 48   5 43  7 04   23 02   9 59    3 56  .....    13  13 46.8 - 8 01
 
                                            ***** 2021 DECEMBER *****
 
 Calendar for Kitt Peak, west longitude (h.m.s) =   7 26 24, latitude (d.m) =  31 57.8
 Note that each line lists events of one night, spanning two calendar dates.  Rise/set times are given
 in Mountain time (  7 hr W), for  900 m above surroundings, in standard time all year.
 Moon coords. and illum. are for local midnight, even if moon is down.  Program: John Thorstensen, Dartmouth College.
 
   Date (eve/morn)      JDmid    LMSTmidn   ---------- Sun: ---------   LST twilight:  ------------- Moon: --------------
   (2021 at start)    (-2450000)            set  twi.end twi.beg rise    eve    morn    rise   set  %illum   RA      Dec
 
 Wed Dec 01/Thu Dec 02  9550.8    4 19 00   17 27  18 48   5 44  7 05   23 06  10 04    5 06  .....     6  14 40.9 -13 57
 Thu Dec 02/Fri Dec 03  9551.8    4 22 56   17 27  18 48   5 44  7 06   23 10  10 08    6 19  16 16     2  15 38.8 -19 12
 Fri Dec 03/Sat Dec 04  9552.8    4 26 53   17 27  18 48   5 45  7 07   23 14  10 13    7 34  17 02     0  16 40.9 -23 18
 Sat Dec 04/Sun Dec 05  9553.8    4 30 49   17 27  18 48   5 46  7 07   23 18  10 17   .....  17 56     1  17 46.1 -25 48
 
 Sun Dec 05/Mon Dec 06  9554.8    4 34 46   17 27  18 49   5 46  7 08   23 22  10 22   .....  18 59     6  18 52.5 -26 27
 Mon Dec 06/Tue Dec 07  9555.8    4 38 42   17 27  18 49   5 47  7 09   23 27  10 27   .....  20 07    12  19 57.4 -25 15
 Tue Dec 07/Wed Dec 08  9556.8    4 42 39   17 27  18 49   5 48  7 10   23 31  10 31   .....  21 17    21  20 58.6 -22 26
 Wed Dec 08/Thu Dec 09  9557.8    4 46 35   17 27  18 49   5 48  7 10   23 35  10 36   .....  22 25    31  21 55.1 -18 23
 Thu Dec 09/Fri Dec 10  9558.8    4 50 32   17 27  18 49   5 49  7 11   23 39  10 41   .....  23 30    41  22 47.3 -13 31
 Fri Dec 10/Sat Dec 11  9559.8    4 54 29   17 28  18 50   5 50  7 12   23 43  10 45   .....   0 31    52  23 35.8 - 8 10
 Sat Dec 11/Sun Dec 12  9560.8    4 58 25   17 28  18 50   5 50  7 13   23 47  10 50   .....   1 29    62   0 21.9 - 2 38
 
 Sun Dec 12/Mon Dec 13  9561.8    5 02 22   17 28  18 50   5 51  7 13   23 52  10 54   .....   2 25    71   1 06.6   2 54
 Mon Dec 13/Tue Dec 14  9562.8    5 06 18   17 28  18 51   5 52  7 14   23 56  10 59   .....   3 21    80   1 51.1   8 13
 Tue Dec 14/Wed Dec 15  9563.8    5 10 15   17 29  18 51   5 52  7 15    0 00  11 03   .....   4 16    87   2 36.2  13 11
 Wed Dec 15/Thu Dec 16  9564.8    5 14 11   17 29  18 51   5 53  7 15    0 05  11 08   .....   5 13    93   3 22.8  17 35
 Thu Dec 16/Fri Dec 17  9565.8    5 18 08   17 29  18 52   5 53  7 16    0 09  11 12   15 41   6 10    97   4 11.3  21 16
 Fri Dec 17/Sat Dec 18  9566.8    5 22 04   17 30  18 52   5 54  7 16    0 13  11 17   16 18   7 06    99   5 02.0  24 02
 Sat Dec 18/Sun Dec 19  9567.8    5 26 01   17 30  18 53   5 54  7 17    0 18  11 21   17 00   8 01   100   5 54.5  25 43
 
 Sun Dec 19/Mon Dec 20  9568.8    5 29 58   17 31  18 53   5 55  7 17    0 22  11 26   17 48  .....    99   6 48.2  26 11
 Mon Dec 20/Tue Dec 21  9569.8    5 33 54   17 31  18 53   5 56  7 18    0 27  11 30   18 40  .....    96   7 42.0  25 25
 Tue Dec 21/Wed Dec 22  9570.8    5 37 51   17 32  18 54   5 56  7 18    0 31  11 35   19 37  .....    91   8 35.0  23 24
 Wed Dec 22/Thu Dec 23  9571.8    5 41 47   17 32  18 54   5 56  7 19    0 35  11 39   20 35  .....    85   9 26.4  20 17
 Thu Dec 23/Fri Dec 24  9572.8    5 45 44   17 33  18 55   5 57  7 19    0 40  11 44   21 34  .....    77  10 16.2  16 13
 Fri Dec 24/Sat Dec 25  9573.8    5 49 40   17 33  18 56   5 57  7 20    0 44  11 48   22 34  .....    68  11 04.5  11 22
 Sat Dec 25/Sun Dec 26  9574.8    5 53 37   17 34  18 56   5 58  7 20    0 49  11 52   23 34  .....    58  11 52.0   5 56
 
 Sun Dec 26/Mon Dec 27  9575.8    5 57 33   17 34  18 57   5 58  7 20    0 53  11 57    0 35  .....    47  12 39.6   0 07
 Mon Dec 27/Tue Dec 28  9576.8    6 01 30   17 35  18 57   5 59  7 21    0 58  12 01    1 38  .....    36  13 28.4 - 5 52
 Tue Dec 28/Wed Dec 29  9577.8    6 05 27   17 36  18 58   5 59  7 21    1 03  12 05    2 43  .....    26  14 19.6 -11 44
 Wed Dec 29/Thu Dec 30  9578.8    6 09 23   17 36  18 59   5 59  7 21    1 07  12 10    3 53  .....    17  15 14.3 -17 08
 Thu Dec 30/Fri Dec 31  9579.8    6 13 20   17 37  18 59   6 00  7 22    1 12  12 14    5 06  .....     9  16 13.3 -21 39
 Fri Dec 31/Sat Jan 01  9580.8    6 17 16   17 38  19 00   6 00  7 22    1 16  12 18    6 19  .....     3  17 16.4 -24 51