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
Updated on February 1, 2021, 2:29 pm