2025
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: --------------
(2025 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec
Wed Jan 01/Thu Jan 02 677.8 6 22 17 17 39 19 01 6 00 7 22 1 22 12 23 ..... 19 35 6 20 57.9 -21 15
Thu Jan 02/Fri Jan 03 678.8 6 26 14 17 39 19 01 6 00 7 22 1 27 12 28 ..... 20 42 12 21 51.2 -16 13
Fri Jan 03/Sat Jan 04 679.8 6 30 11 17 40 19 02 6 01 7 22 1 31 12 32 ..... 21 48 21 22 42.4 -10 19
Sat Jan 04/Sun Jan 05 680.8 6 34 07 17 41 19 03 6 01 7 23 1 36 12 36 ..... 22 54 30 23 32.1 - 3 53
Sun Jan 05/Mon Jan 06 681.8 6 38 04 17 42 19 03 6 01 7 23 1 41 12 40 ..... 23 59 41 0 21.5 2 48
Mon Jan 06/Tue Jan 07 682.8 6 42 00 17 42 19 04 6 01 7 23 1 45 12 44 ..... 1 05 53 1 11.8 9 23
Tue Jan 07/Wed Jan 08 683.8 6 45 57 17 43 19 05 6 01 7 23 1 50 12 48 ..... 2 13 64 2 04.3 15 33
Wed Jan 08/Thu Jan 09 684.8 6 49 53 17 44 19 06 6 01 7 23 1 55 12 52 ..... 3 23 74 3 00.0 20 54
Thu Jan 09/Fri Jan 10 685.8 6 53 50 17 45 19 06 6 01 7 23 1 59 12 56 ..... 4 34 84 3 59.5 25 03
Fri Jan 10/Sat Jan 11 686.8 6 57 46 17 46 19 07 6 01 7 23 2 04 13 00 ..... 5 42 91 5 02.0 27 38
Sat Jan 11/Sun Jan 12 687.8 7 01 43 17 47 19 08 6 01 7 23 2 09 13 04 ..... 6 45 96 6 05.9 28 24
Sun Jan 12/Mon Jan 13 688.8 7 05 40 17 48 19 09 6 01 7 22 2 14 13 08 16 23 7 39 99 7 08.8 27 19
Mon Jan 13/Tue Jan 14 689.8 7 09 36 17 48 19 09 6 01 7 22 2 18 13 12 17 29 ..... 100 8 08.5 24 35
Tue Jan 14/Wed Jan 15 690.8 7 13 33 17 49 19 10 6 01 7 22 2 23 13 16 18 36 ..... 98 9 03.8 20 33
Wed Jan 15/Thu Jan 16 691.8 7 17 29 17 50 19 11 6 01 7 22 2 28 13 20 19 39 ..... 94 9 54.6 15 38
Thu Jan 16/Fri Jan 17 692.8 7 21 26 17 51 19 12 6 01 7 22 2 32 13 23 20 39 ..... 88 10 41.7 10 09
Fri Jan 17/Sat Jan 18 693.8 7 25 22 17 52 19 13 6 01 7 21 2 37 13 27 21 36 ..... 81 11 26.1 4 24
Sat Jan 18/Sun Jan 19 694.8 7 29 19 17 53 19 13 6 01 7 21 2 42 13 31 22 31 ..... 73 12 08.8 - 1 23
Sun Jan 19/Mon Jan 20 695.8 7 33 15 17 54 19 14 6 01 7 21 2 47 13 35 23 26 ..... 64 12 51.1 - 7 02
Mon Jan 20/Tue Jan 21 696.8 7 37 12 17 55 19 15 6 00 7 20 2 51 13 38 0 20 ..... 55 13 33.9 -12 24
Tue Jan 21/Wed Jan 22 697.8 7 41 09 17 56 19 16 6 00 7 20 2 56 13 42 1 16 ..... 45 14 18.4 -17 20
Wed Jan 22/Thu Jan 23 698.8 7 45 05 17 56 19 16 6 00 7 20 3 01 13 46 2 14 ..... 36 15 05.4 -21 38
Thu Jan 23/Fri Jan 24 699.8 7 49 02 17 57 19 17 5 59 7 19 3 06 13 49 3 14 ..... 27 15 55.5 -25 06
Fri Jan 24/Sat Jan 25 700.8 7 52 58 17 58 19 18 5 59 7 19 3 10 13 53 4 14 ..... 19 16 49.0 -27 31
Sat Jan 25/Sun Jan 26 701.8 7 56 55 17 59 19 19 5 59 7 18 3 15 13 57 5 13 ..... 12 17 45.6 -28 36
Sun Jan 26/Mon Jan 27 702.8 8 00 51 18 00 19 20 5 58 7 18 3 20 14 00 6 08 ..... 6 18 43.9 -28 11
Mon Jan 27/Tue Jan 28 703.8 8 04 48 18 01 19 20 5 58 7 17 3 24 14 04 6 57 16 10 2 19 42.5 -26 11
Tue Jan 28/Wed Jan 29 704.8 8 08 44 18 02 19 21 5 57 7 17 3 29 14 07 7 40 17 18 0 20 39.9 -22 40
Wed Jan 29/Thu Jan 30 705.8 8 12 41 18 03 19 22 5 57 7 16 3 34 14 11 ..... 18 27 1 21 35.0 -17 51
Thu Jan 30/Fri Jan 31 706.8 8 16 38 18 04 19 23 5 57 7 15 3 39 14 14 ..... 19 36 4 22 27.9 -12 00
Fri Jan 31/Sat Feb 01 707.8 8 20 34 18 05 19 24 5 56 7 15 3 43 14 18 ..... 20 43 9 23 19.0 - 5 30
***** 2025 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: --------------
(2025 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec
Sat Feb 01/Sun Feb 02 708.8 8 24 31 18 06 19 24 5 55 7 14 3 48 14 21 ..... 21 50 17 0 09.2 1 18
Sun Feb 02/Mon Feb 03 709.8 8 28 27 18 07 19 25 5 55 7 13 3 53 14 24 ..... 22 57 27 0 59.8 8 02
Mon Feb 03/Tue Feb 04 710.8 8 32 24 18 07 19 26 5 54 7 13 3 58 14 28 ..... 0 05 37 1 51.9 14 21
Tue Feb 04/Wed Feb 05 711.8 8 36 20 18 08 19 27 5 54 7 12 4 02 14 31 ..... 1 15 49 2 46.5 19 53
Wed Feb 05/Thu Feb 06 712.8 8 40 17 18 09 19 28 5 53 7 11 4 07 14 34 ..... 2 25 60 3 44.2 24 16
Thu Feb 06/Fri Feb 07 713.8 8 44 13 18 10 19 28 5 52 7 10 4 12 14 38 ..... 3 33 71 4 44.7 27 12
Fri Feb 07/Sat Feb 08 714.8 8 48 10 18 11 19 29 5 52 7 10 4 17 14 41 ..... 4 37 80 5 46.9 28 25
Sat Feb 08/Sun Feb 09 715.8 8 52 07 18 12 19 30 5 51 7 09 4 21 14 44 ..... 5 32 88 6 48.8 27 52
Sun Feb 09/Mon Feb 10 716.8 8 56 03 18 13 19 31 5 50 7 08 4 26 14 47 ..... 6 19 94 7 48.3 25 39
Mon Feb 10/Tue Feb 11 717.8 9 00 00 18 14 19 31 5 49 7 07 4 31 14 50 16 21 6 58 98 8 44.2 22 03
Tue Feb 11/Wed Feb 12 718.8 9 03 56 18 14 19 32 5 49 7 06 4 35 14 54 17 25 7 31 100 9 36.1 17 25
Wed Feb 12/Thu Feb 13 719.8 9 07 53 18 15 19 33 5 48 7 05 4 40 14 57 18 26 ..... 99 10 24.3 12 05
Thu Feb 13/Fri Feb 14 720.8 9 11 49 18 16 19 34 5 47 7 04 4 45 15 00 19 25 ..... 97 11 09.7 6 21
Fri Feb 14/Sat Feb 15 721.8 9 15 46 18 17 19 35 5 46 7 03 4 50 15 03 20 21 ..... 93 11 53.2 0 28
Sat Feb 15/Sun Feb 16 722.8 9 19 42 18 18 19 35 5 45 7 03 4 54 15 06 21 16 ..... 87 12 35.9 - 5 20
Sun Feb 16/Mon Feb 17 723.8 9 23 39 18 19 19 36 5 44 7 02 4 59 15 09 22 10 ..... 80 13 18.8 -10 53
Mon Feb 17/Tue Feb 18 724.8 9 27 36 18 20 19 37 5 43 7 01 5 04 15 12 23 06 ..... 72 14 02.9 -16 01
Tue Feb 18/Wed Feb 19 725.8 9 31 32 18 20 19 38 5 42 7 00 5 08 15 15 0 02 ..... 63 14 49.0 -20 34
Wed Feb 19/Thu Feb 20 726.8 9 35 29 18 21 19 38 5 42 6 58 5 13 15 18 1 01 ..... 53 15 37.8 -24 19
Thu Feb 20/Fri Feb 21 727.8 9 39 25 18 22 19 39 5 41 6 57 5 18 15 21 2 00 ..... 44 16 29.8 -27 05
Fri Feb 21/Sat Feb 22 728.8 9 43 22 18 23 19 40 5 40 6 56 5 22 15 24 2 59 ..... 34 17 24.7 -28 38
Sat Feb 22/Sun Feb 23 729.8 9 47 18 18 24 19 41 5 39 6 55 5 27 15 27 3 55 ..... 25 18 21.9 -28 47
Sun Feb 23/Mon Feb 24 730.8 9 51 15 18 24 19 41 5 37 6 54 5 32 15 30 4 46 ..... 17 19 20.0 -27 22
Mon Feb 24/Tue Feb 25 731.8 9 55 11 18 25 19 42 5 36 6 53 5 36 15 33 5 31 ..... 10 20 17.6 -24 26
Tue Feb 25/Wed Feb 26 732.8 9 59 08 18 26 19 43 5 35 6 52 5 41 15 35 6 11 ..... 4 21 13.6 -20 03
Wed Feb 26/Thu Feb 27 733.8 10 03 05 18 27 19 43 5 34 6 51 5 46 15 38 6 47 17 14 1 22 07.8 -14 30
Thu Feb 27/Fri Feb 28 734.8 10 07 01 18 28 19 44 5 33 6 50 5 51 15 41 7 19 18 23 0 23 00.3 - 8 04
Fri Feb 28/Sat Mar 01 735.8 10 10 58 18 28 19 45 5 32 6 49 5 55 15 44 ..... 19 32 2 23 51.9 - 1 09
***** 2025 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: --------------
(2025 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec
Sat Mar 01/Sun Mar 02 736.8 10 14 54 18 29 19 46 5 31 6 47 6 00 15 47 ..... 20 42 7 0 43.7 5 52
Sun Mar 02/Mon Mar 03 737.8 10 18 51 18 30 19 46 5 30 6 46 6 05 15 50 ..... 21 52 14 1 36.6 12 33
Mon Mar 03/Tue Mar 04 738.8 10 22 47 18 31 19 47 5 29 6 45 6 09 15 52 ..... 23 03 23 2 31.8 18 29
Tue Mar 04/Wed Mar 05 739.8 10 26 44 18 31 19 48 5 27 6 44 6 14 15 55 ..... 0 16 34 3 29.7 23 17
Wed Mar 05/Thu Mar 06 740.8 10 30 40 18 32 19 49 5 26 6 43 6 19 15 58 ..... 1 26 45 4 30.1 26 37
Thu Mar 06/Fri Mar 07 741.8 10 34 37 18 33 19 49 5 25 6 41 6 23 16 01 ..... 2 32 56 5 32.0 28 15
Fri Mar 07/Sat Mar 08 742.8 10 38 34 18 34 19 50 5 24 6 40 6 28 16 03 ..... 3 29 67 6 33.6 28 07
Sat Mar 08/Sun Mar 09 743.8 10 42 30 18 34 19 51 5 23 6 39 6 33 16 06 ..... 4 18 76 7 33.0 26 19
Sun Mar 09/Mon Mar 10 744.8 10 46 27 18 35 19 52 5 21 6 38 6 37 16 09 ..... 4 59 85 8 28.9 23 06
Mon Mar 10/Tue Mar 11 745.8 10 50 23 18 36 19 52 5 20 6 37 6 42 16 11 ..... 5 33 91 9 21.0 18 46
Tue Mar 11/Wed Mar 12 746.8 10 54 20 18 36 19 53 5 19 6 35 6 47 16 14 ..... 6 03 96 10 09.5 13 40
Wed Mar 12/Thu Mar 13 747.8 10 58 16 18 37 19 54 5 17 6 34 6 51 16 17 17 16 6 29 99 10 55.1 8 04
Thu Mar 13/Fri Mar 14 748.8 11 02 13 18 38 19 55 5 16 6 33 6 56 16 19 18 12 6 54 100 11 38.9 2 14
Fri Mar 14/Sat Mar 15 749.8 11 06 09 18 39 19 55 5 15 6 32 7 01 16 22 19 08 7 18 99 12 21.8 - 3 38
Sat Mar 15/Sun Mar 16 750.8 11 10 06 18 39 19 56 5 14 6 30 7 05 16 25 20 02 ..... 96 13 04.7 - 9 19
Sun Mar 16/Mon Mar 17 751.8 11 14 03 18 40 19 57 5 12 6 29 7 10 16 27 20 57 ..... 92 13 48.5 -14 39
Mon Mar 17/Tue Mar 18 752.8 11 17 59 18 41 19 58 5 11 6 28 7 15 16 30 21 53 ..... 86 14 34.2 -19 26
Tue Mar 18/Wed Mar 19 753.8 11 21 56 18 41 19 58 5 10 6 26 7 20 16 32 22 51 ..... 78 15 22.2 -23 28
Wed Mar 19/Thu Mar 20 754.8 11 25 52 18 42 19 59 5 08 6 25 7 24 16 35 23 50 ..... 70 16 13.1 -26 33
Thu Mar 20/Fri Mar 21 755.8 11 29 49 18 43 20 00 5 07 6 24 7 29 16 37 0 48 ..... 61 17 06.7 -28 30
Fri Mar 21/Sat Mar 22 756.8 11 33 45 18 43 20 01 5 05 6 23 7 34 16 40 1 44 ..... 51 18 02.4 -29 06
Sat Mar 22/Sun Mar 23 757.8 11 37 42 18 44 20 01 5 04 6 21 7 38 16 43 2 36 ..... 41 18 59.3 -28 15
Sun Mar 23/Mon Mar 24 758.8 11 41 38 18 45 20 02 5 03 6 20 7 43 16 45 3 23 ..... 31 19 56.0 -25 55
Mon Mar 24/Tue Mar 25 759.8 11 45 35 18 46 20 03 5 01 6 19 7 48 16 48 4 04 ..... 22 20 51.7 -22 09
Tue Mar 25/Wed Mar 26 760.8 11 49 32 18 46 20 04 5 00 6 17 7 53 16 50 4 41 ..... 13 21 45.7 -17 07
Wed Mar 26/Thu Mar 27 761.8 11 53 28 18 47 20 05 4 59 6 16 7 57 16 53 5 14 ..... 7 22 38.3 -11 04
Thu Mar 27/Fri Mar 28 762.8 11 57 25 18 48 20 05 4 57 6 15 8 02 16 55 5 46 17 08 2 23 30.2 - 4 19
Fri Mar 28/Sat Mar 29 763.8 12 01 21 18 48 20 06 4 56 6 14 8 07 16 58 6 17 18 17 0 0 22.3 2 47
Sat Mar 29/Sun Mar 30 764.8 12 05 18 18 49 20 07 4 54 6 12 8 12 17 00 6 51 19 29 1 1 15.6 9 46
Sun Mar 30/Mon Mar 31 765.8 12 09 14 18 50 20 08 4 53 6 11 8 16 17 03 ..... 20 42 5 2 11.3 16 13
Mon Mar 31/Tue Apr 01 766.8 12 13 11 18 50 20 09 4 52 6 10 8 21 17 06 ..... 21 57 11 3 09.9 21 37
***** 2025 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: --------------
(2025 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec
Tue Apr 01/Wed Apr 02 767.8 12 17 07 18 51 20 09 4 50 6 08 8 26 17 08 ..... 23 11 20 4 11.3 25 34
Wed Apr 02/Thu Apr 03 768.8 12 21 04 18 52 20 10 4 49 6 07 8 31 17 11 ..... 0 21 30 5 14.5 27 46
Thu Apr 03/Fri Apr 04 769.8 12 25 01 18 52 20 11 4 47 6 06 8 35 17 13 ..... 1 24 41 6 17.5 28 07
Fri Apr 04/Sat Apr 05 770.8 12 28 57 18 53 20 12 4 46 6 05 8 40 17 16 ..... 2 16 51 7 18.2 26 42
Sat Apr 05/Sun Apr 06 771.8 12 32 54 18 54 20 13 4 44 6 03 8 45 17 18 ..... 3 00 62 8 15.2 23 49
Sun Apr 06/Mon Apr 07 772.8 12 36 50 18 54 20 14 4 43 6 02 8 50 17 21 ..... 3 36 72 9 08.0 19 46
Mon Apr 07/Tue Apr 08 773.8 12 40 47 18 55 20 14 4 42 6 01 8 55 17 23 ..... 4 06 80 9 56.9 14 52
Tue Apr 08/Wed Apr 09 774.8 12 44 43 18 56 20 15 4 40 6 00 8 59 17 26 ..... 4 33 88 10 42.7 9 27
Wed Apr 09/Thu Apr 10 775.8 12 48 40 18 56 20 16 4 39 5 59 9 04 17 28 ..... 4 58 93 11 26.5 3 43
Thu Apr 10/Fri Apr 11 776.8 12 52 36 18 57 20 17 4 37 5 57 9 09 17 31 17 02 5 23 97 12 09.2 - 2 07
Fri Apr 11/Sat Apr 12 777.8 12 56 33 18 58 20 18 4 36 5 56 9 14 17 33 17 56 5 47 100 12 51.9 - 7 50
Sat Apr 12/Sun Apr 13 778.8 13 00 30 18 59 20 19 4 35 5 55 9 19 17 36 18 51 6 13 100 13 35.4 -13 17
Sun Apr 13/Mon Apr 14 779.8 13 04 26 18 59 20 20 4 33 5 54 9 24 17 38 19 47 6 42 98 14 20.6 -18 15
Mon Apr 14/Tue Apr 15 780.8 13 08 23 19 00 20 21 4 32 5 53 9 28 17 41 20 44 ..... 95 15 08.2 -22 31
Tue Apr 15/Wed Apr 16 781.8 13 12 19 19 01 20 22 4 30 5 51 9 33 17 44 21 42 ..... 90 15 58.5 -25 54
Wed Apr 16/Thu Apr 17 782.8 13 16 16 19 01 20 22 4 29 5 50 9 38 17 46 22 40 ..... 84 16 51.5 -28 11
Thu Apr 17/Fri Apr 18 783.8 13 20 12 19 02 20 23 4 28 5 49 9 43 17 49 23 37 ..... 76 17 46.6 -29 10
Fri Apr 18/Sat Apr 19 784.8 13 24 09 19 03 20 24 4 26 5 48 9 48 17 51 0 29 ..... 67 18 42.7 -28 44
Sat Apr 19/Sun Apr 20 785.8 13 28 05 19 03 20 25 4 25 5 47 9 53 17 54 1 17 ..... 57 19 38.7 -26 52
Sun Apr 20/Mon Apr 21 786.8 13 32 02 19 04 20 26 4 24 5 46 9 58 17 56 1 59 ..... 47 20 33.5 -23 37
Mon Apr 21/Tue Apr 22 787.8 13 35 59 19 05 20 27 4 22 5 45 10 03 17 59 2 36 ..... 37 21 26.8 -19 07
Tue Apr 22/Wed Apr 23 788.8 13 39 55 19 06 20 28 4 21 5 44 10 07 18 02 3 10 ..... 26 22 18.5 -13 35
Wed Apr 23/Thu Apr 24 789.8 13 43 52 19 06 20 29 4 20 5 42 10 12 18 04 3 41 ..... 17 23 09.3 - 7 14
Thu Apr 24/Fri Apr 25 790.8 13 47 48 19 07 20 30 4 18 5 41 10 17 18 07 4 12 ..... 9 0 00.2 - 0 23
Fri Apr 25/Sat Apr 26 791.8 13 51 45 19 08 20 31 4 17 5 40 10 22 18 09 4 44 ..... 4 0 52.4 6 37
Sat Apr 26/Sun Apr 27 792.8 13 55 41 19 08 20 32 4 16 5 39 10 27 18 12 5 19 18 14 0 1 47.0 13 19
Sun Apr 27/Mon Apr 28 793.8 13 59 38 19 09 20 33 4 14 5 38 10 32 18 15 6 00 19 29 0 2 44.9 19 15
Mon Apr 28/Tue Apr 29 794.8 14 03 34 19 10 20 34 4 13 5 37 10 37 18 17 ..... 20 46 3 3 46.5 23 55
Tue Apr 29/Wed Apr 30 795.8 14 07 31 19 11 20 35 4 12 5 36 10 42 18 20 ..... 22 01 9 4 50.8 26 52
Wed Apr 30/Thu May 01 796.8 14 11 28 19 11 20 36 4 11 5 35 10 47 18 23 ..... 23 09 17 5 55.8 27 54
***** 2025 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: --------------
(2025 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec
Thu May 01/Fri May 02 797.8 14 15 24 19 12 20 37 4 10 5 34 10 52 18 26 ..... 0 08 26 6 59.1 27 01
Fri May 02/Sat May 03 798.8 14 19 21 19 13 20 38 4 08 5 34 10 57 18 28 ..... 0 57 36 7 58.5 24 29
Sat May 03/Sun May 04 799.8 14 23 17 19 13 20 39 4 07 5 33 11 02 18 31 ..... 1 36 46 8 53.4 20 41
Sun May 04/Mon May 05 800.8 14 27 14 19 14 20 40 4 06 5 32 11 07 18 34 ..... 2 09 57 9 43.7 15 58
Mon May 05/Tue May 06 801.8 14 31 10 19 15 20 41 4 05 5 31 11 12 18 37 ..... 2 37 67 10 30.4 10 39
Tue May 06/Wed May 07 802.8 14 35 07 19 16 20 42 4 04 5 30 11 16 18 39 ..... 3 03 75 11 14.6 5 00
Wed May 07/Thu May 08 803.8 14 39 03 19 16 20 43 4 03 5 29 11 21 18 42 ..... 3 27 83 11 57.3 - 0 46
Thu May 08/Fri May 09 804.8 14 43 00 19 17 20 44 4 01 5 28 11 26 18 45 ..... 3 52 90 12 39.7 - 6 29
Fri May 09/Sat May 10 805.8 14 46 57 19 18 20 45 4 00 5 28 11 31 18 48 ..... 4 17 95 13 22.8 -11 58
Sat May 10/Sun May 11 806.8 14 50 53 19 18 20 46 3 59 5 27 11 36 18 51 17 41 4 45 98 14 07.5 -17 03
Sun May 11/Mon May 12 807.8 14 54 50 19 19 20 47 3 58 5 26 11 41 18 54 18 37 5 17 100 14 54.5 -21 31
Mon May 12/Tue May 13 808.8 14 58 46 19 20 20 48 3 57 5 25 11 46 18 57 19 36 5 53 99 15 44.4 -25 09
Tue May 13/Wed May 14 809.8 15 02 43 19 21 20 49 3 56 5 25 11 51 19 00 20 34 ..... 97 16 37.1 -27 44
Wed May 14/Thu May 15 810.8 15 06 39 19 21 20 50 3 55 5 24 11 56 19 03 21 31 ..... 93 17 32.1 -29 03
Thu May 15/Fri May 16 811.8 15 10 36 19 22 20 51 3 54 5 23 12 01 19 06 22 25 ..... 88 18 28.4 -28 58
Fri May 16/Sat May 17 812.8 15 14 32 19 23 20 52 3 53 5 23 12 06 19 09 23 14 ..... 81 19 24.5 -27 26
Sat May 17/Sun May 18 813.8 15 18 29 19 23 20 53 3 53 5 22 12 11 19 12 23 57 ..... 72 20 19.4 -24 32
Sun May 18/Mon May 19 814.8 15 22 26 19 24 20 54 3 52 5 21 12 16 19 15 0 35 ..... 62 21 12.3 -20 24
Mon May 19/Tue May 20 815.8 15 26 22 19 25 20 55 3 51 5 21 12 21 19 18 1 09 ..... 52 22 03.3 -15 14
Tue May 20/Wed May 21 816.8 15 30 19 19 25 20 56 3 50 5 20 12 26 19 21 1 40 ..... 41 22 53.1 - 9 17
Wed May 21/Thu May 22 817.8 15 34 15 19 26 20 57 3 49 5 20 12 30 19 24 2 10 ..... 30 23 42.5 - 2 46
Thu May 22/Fri May 23 818.8 15 38 12 19 27 20 58 3 49 5 19 12 35 19 27 2 40 ..... 20 0 32.7 4 00
Fri May 23/Sat May 24 819.8 15 42 08 19 27 20 58 3 48 5 19 12 40 19 31 3 13 ..... 12 1 25.0 10 40
Sat May 24/Sun May 25 820.8 15 46 05 19 28 20 59 3 47 5 18 12 45 19 34 3 50 ..... 5 2 20.6 16 50
Sun May 25/Mon May 26 821.8 15 50 01 19 29 21 00 3 46 5 18 12 50 19 37 4 33 18 17 1 3 20.2 21 59
Mon May 26/Tue May 27 822.8 15 53 58 19 29 21 01 3 46 5 18 12 55 19 40 5 25 19 34 0 4 23.5 25 39
Tue May 27/Wed May 28 823.8 15 57 55 19 30 21 02 3 45 5 17 12 59 19 44 6 26 20 47 2 5 29.2 27 28
Wed May 28/Thu May 29 824.8 16 01 51 19 31 21 03 3 45 5 17 13 04 19 47 ..... 21 52 7 6 34.5 27 18
Thu May 29/Fri May 30 825.8 16 05 48 19 31 21 04 3 44 5 17 13 09 19 50 ..... 22 47 13 7 36.8 25 17
Fri May 30/Sat May 31 826.8 16 09 44 19 32 21 04 3 44 5 16 13 14 19 54 ..... 23 31 22 8 34.6 21 48
Sat May 31/Sun Jun 01 827.8 16 13 41 19 32 21 05 3 43 5 16 13 18 19 57 ..... 0 08 31 9 27.4 17 14
***** 2025 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: --------------
(2025 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec
Sun Jun 01/Mon Jun 02 828.8 16 17 37 19 33 21 06 3 43 5 16 13 23 20 01 ..... 0 38 41 10 15.9 12 00
Mon Jun 02/Tue Jun 03 829.8 16 21 34 19 33 21 07 3 42 5 16 13 28 20 04 ..... 1 05 51 11 01.2 6 23
Tue Jun 03/Wed Jun 04 830.8 16 25 30 19 34 21 08 3 42 5 15 13 33 20 08 ..... 1 30 61 11 44.5 0 37
Wed Jun 04/Thu Jun 05 831.8 16 29 27 19 35 21 08 3 42 5 15 13 37 20 12 ..... 1 55 70 12 27.0 - 5 07
Thu Jun 05/Fri Jun 06 832.8 16 33 24 19 35 21 09 3 41 5 15 13 42 20 15 ..... 2 20 78 13 09.8 -10 39
Fri Jun 06/Sat Jun 07 833.8 16 37 20 19 36 21 10 3 41 5 15 13 46 20 19 ..... 2 47 85 13 53.8 -15 49
Sat Jun 07/Sun Jun 08 834.8 16 41 17 19 36 21 10 3 41 5 15 13 51 20 23 ..... 3 18 91 14 40.1 -20 26
Sun Jun 08/Mon Jun 09 835.8 16 45 13 19 36 21 11 3 41 5 15 13 56 20 26 ..... 3 53 96 15 29.2 -24 19
Mon Jun 09/Tue Jun 10 836.8 16 49 10 19 37 21 11 3 40 5 15 14 00 20 30 18 27 4 33 99 16 21.4 -27 11
Tue Jun 10/Wed Jun 11 837.8 16 53 06 19 37 21 12 3 40 5 15 14 05 20 34 19 25 5 21 100 17 16.4 -28 51
Wed Jun 11/Thu Jun 12 838.8 16 57 03 19 38 21 12 3 40 5 15 14 09 20 38 20 21 6 15 99 18 13.1 -29 07
Thu Jun 12/Fri Jun 13 839.8 17 00 59 19 38 21 13 3 40 5 15 14 13 20 42 21 12 ..... 96 19 10.0 -27 55
Fri Jun 13/Sat Jun 14 840.8 17 04 56 19 39 21 13 3 40 5 15 14 18 20 46 21 57 ..... 91 20 05.9 -25 17
Sat Jun 14/Sun Jun 15 841.8 17 08 53 19 39 21 14 3 40 5 15 14 22 20 49 22 36 ..... 84 20 59.6 -21 22
Sun Jun 15/Mon Jun 16 842.8 17 12 49 19 39 21 14 3 40 5 15 14 27 20 53 23 11 ..... 76 21 51.1 -16 24
Mon Jun 16/Tue Jun 17 843.8 17 16 46 19 40 21 15 3 40 5 15 14 31 20 57 23 42 ..... 66 22 40.8 -10 37
Tue Jun 17/Wed Jun 18 844.8 17 20 42 19 40 21 15 3 40 5 15 14 35 21 02 0 11 ..... 55 23 29.5 - 4 18
Wed Jun 18/Thu Jun 19 845.8 17 24 39 19 40 21 15 3 40 5 15 14 39 21 06 0 40 ..... 44 0 18.3 2 17
Thu Jun 19/Fri Jun 20 846.8 17 28 35 19 40 21 15 3 41 5 16 14 44 21 10 1 11 ..... 33 1 08.6 8 50
Fri Jun 20/Sat Jun 21 847.8 17 32 32 19 41 21 16 3 41 5 16 14 48 21 14 1 45 ..... 23 2 01.6 15 00
Sat Jun 21/Sun Jun 22 848.8 17 36 28 19 41 21 16 3 41 5 16 14 52 21 18 2 24 ..... 14 2 58.4 20 22
Sun Jun 22/Mon Jun 23 849.8 17 40 25 19 41 21 16 3 41 5 16 14 56 21 22 3 11 ..... 7 3 59.2 24 29
Mon Jun 23/Tue Jun 24 850.8 17 44 22 19 41 21 16 3 42 5 17 15 00 21 27 4 07 18 24 2 5 03.3 26 57
Tue Jun 24/Wed Jun 25 851.8 17 48 18 19 41 21 16 3 42 5 17 15 04 21 31 5 11 19 33 0 6 08.7 27 30
Wed Jun 25/Thu Jun 26 852.8 17 52 15 19 41 21 16 3 42 5 17 15 08 21 35 6 21 20 33 1 7 12.5 26 08
Thu Jun 26/Fri Jun 27 853.8 17 56 11 19 41 21 16 3 43 5 18 15 12 21 40 ..... 21 22 5 8 12.6 23 06
Fri Jun 27/Sat Jun 28 854.8 18 00 08 19 42 21 16 3 43 5 18 15 16 21 44 ..... 22 03 10 9 07.9 18 49
Sat Jun 28/Sun Jun 29 855.8 18 04 04 19 42 21 16 3 44 5 18 15 20 21 48 ..... 22 36 17 9 58.6 13 41
Sun Jun 29/Mon Jun 30 856.8 18 08 01 19 42 21 16 3 44 5 19 15 24 21 53 ..... 23 05 26 10 45.6 8 04
Mon Jun 30/Tue Jul 01 857.8 18 11 57 19 42 21 16 3 45 5 19 15 28 21 57 ..... 23 32 35 11 30.0 2 15
***** 2025 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: --------------
(2025 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec
Tue Jul 01/Wed Jul 02 858.8 18 15 54 19 42 21 16 3 45 5 20 15 31 22 02 ..... 23 57 45 12 13.0 - 3 33
Wed Jul 02/Thu Jul 03 859.8 18 19 51 19 41 21 16 3 46 5 20 15 35 22 06 ..... 0 22 54 12 55.7 - 9 10
Thu Jul 03/Fri Jul 04 860.8 18 23 47 19 41 21 16 3 46 5 20 15 39 22 11 ..... 0 48 63 13 39.3 -14 27
Fri Jul 04/Sat Jul 05 861.8 18 27 44 19 41 21 15 3 47 5 21 15 43 22 15 ..... 1 17 72 14 24.7 -19 14
Sat Jul 05/Sun Jul 06 862.8 18 31 40 19 41 21 15 3 48 5 21 15 46 22 20 ..... 1 51 80 15 12.8 -23 19
Sun Jul 06/Mon Jul 07 863.8 18 35 37 19 41 21 15 3 48 5 22 15 50 22 25 ..... 2 29 87 16 03.9 -26 30
Mon Jul 07/Tue Jul 08 864.8 18 39 33 19 41 21 14 3 49 5 22 15 53 22 29 ..... 3 15 93 16 58.2 -28 32
Tue Jul 08/Wed Jul 09 865.8 18 43 30 19 41 21 14 3 50 5 23 15 57 22 34 18 13 4 07 97 17 54.7 -29 13
Wed Jul 09/Thu Jul 10 866.8 18 47 26 19 40 21 13 3 50 5 23 16 00 22 38 19 06 5 06 99 18 52.3 -28 26
Thu Jul 10/Fri Jul 11 867.8 18 51 23 19 40 21 13 3 51 5 24 16 04 22 43 19 54 6 09 100 19 49.4 -26 08
Fri Jul 11/Sat Jul 12 868.8 18 55 20 19 40 21 12 3 52 5 25 16 07 22 48 20 36 ..... 98 20 44.7 -22 28
Sat Jul 12/Sun Jul 13 869.8 18 59 16 19 39 21 12 3 53 5 25 16 11 22 53 21 12 ..... 93 21 37.7 -17 38
Sun Jul 13/Mon Jul 14 870.8 19 03 13 19 39 21 11 3 54 5 26 16 14 22 57 21 44 ..... 87 22 28.5 -11 54
Mon Jul 14/Tue Jul 15 871.8 19 07 09 19 39 21 11 3 54 5 26 16 17 23 02 22 14 ..... 79 23 17.8 - 5 36
Tue Jul 15/Wed Jul 16 872.8 19 11 06 19 38 21 10 3 55 5 27 16 21 23 07 22 43 ..... 69 0 06.8 1 00
Wed Jul 16/Thu Jul 17 873.8 19 15 02 19 38 21 09 3 56 5 28 16 24 23 12 23 13 ..... 58 0 56.4 7 35
Thu Jul 17/Fri Jul 18 874.8 19 18 59 19 37 21 09 3 57 5 28 16 27 23 17 23 45 ..... 46 1 48.1 13 48
Fri Jul 18/Sat Jul 19 875.8 19 22 55 19 37 21 08 3 58 5 29 16 30 23 21 0 21 ..... 35 2 42.9 19 17
Sat Jul 19/Sun Jul 20 876.8 19 26 52 19 36 21 07 3 59 5 29 16 34 23 26 1 03 ..... 25 3 41.3 23 40
Sun Jul 20/Mon Jul 21 877.8 19 30 49 19 36 21 06 4 00 5 30 16 37 23 31 1 54 ..... 15 4 43.2 26 33
Mon Jul 21/Tue Jul 22 878.8 19 34 45 19 35 21 06 4 00 5 31 16 40 23 36 2 54 ..... 8 5 47.0 27 39
Tue Jul 22/Wed Jul 23 879.8 19 38 42 19 35 21 05 4 01 5 31 16 43 23 41 4 01 18 19 3 6 50.5 26 53
Wed Jul 23/Thu Jul 24 880.8 19 42 38 19 34 21 04 4 02 5 32 16 46 23 46 5 10 19 12 0 7 51.3 24 23
Thu Jul 24/Fri Jul 25 881.8 19 46 35 19 34 21 03 4 03 5 33 16 49 23 50 6 19 19 56 0 8 48.1 20 29
Fri Jul 25/Sat Jul 26 882.8 19 50 31 19 33 21 02 4 04 5 33 16 52 23 55 ..... 20 33 3 9 40.4 15 34
Sat Jul 26/Sun Jul 27 883.8 19 54 28 19 32 21 01 4 05 5 34 16 55 0 00 ..... 21 04 7 10 28.9 10 02
Sun Jul 27/Mon Jul 28 884.8 19 58 24 19 32 21 00 4 06 5 35 16 58 0 05 ..... 21 32 13 11 14.4 4 12
Mon Jul 28/Tue Jul 29 885.8 20 02 21 19 31 20 59 4 07 5 35 17 01 0 10 ..... 21 57 20 11 58.1 - 1 42
Tue Jul 29/Wed Jul 30 886.8 20 06 18 19 30 20 58 4 08 5 36 17 04 0 15 ..... 22 23 29 12 41.0 - 7 26
Wed Jul 30/Thu Jul 31 887.8 20 10 14 19 29 20 57 4 09 5 37 17 07 0 20 ..... 22 49 38 13 24.4 -12 52
Thu Jul 31/Fri Aug 01 888.8 20 14 11 19 29 20 56 4 10 5 37 17 10 0 25 ..... 23 17 47 14 09.1 -17 50
***** 2025 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: --------------
(2025 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec
Fri Aug 01/Sat Aug 02 889.8 20 18 07 19 28 20 55 4 11 5 38 17 13 0 30 ..... 23 48 57 14 55.9 -22 08
Sat Aug 02/Sun Aug 03 890.8 20 22 04 19 27 20 54 4 12 5 39 17 15 0 34 ..... 0 24 66 15 45.6 -25 36
Sun Aug 03/Mon Aug 04 891.8 20 26 00 19 26 20 53 4 13 5 39 17 18 0 39 ..... 1 07 75 16 38.4 -28 01
Mon Aug 04/Tue Aug 05 892.8 20 29 57 19 25 20 52 4 14 5 40 17 21 0 44 ..... 1 56 83 17 33.9 -29 11
Tue Aug 05/Wed Aug 06 893.8 20 33 53 19 24 20 50 4 15 5 41 17 24 0 49 ..... 2 53 90 18 31.1 -28 54
Wed Aug 06/Thu Aug 07 894.8 20 37 50 19 23 20 49 4 16 5 41 17 27 0 54 17 47 3 55 95 19 28.7 -27 06
Thu Aug 07/Fri Aug 08 895.8 20 41 47 19 23 20 48 4 16 5 42 17 29 0 59 18 32 5 00 99 20 25.2 -23 51
Fri Aug 08/Sat Aug 09 896.8 20 45 43 19 22 20 47 4 17 5 43 17 32 1 04 19 11 6 05 100 21 19.8 -19 16
Sat Aug 09/Sun Aug 10 897.8 20 49 40 19 21 20 46 4 18 5 43 17 35 1 09 19 45 ..... 99 22 12.3 -13 40
Sun Aug 10/Mon Aug 11 898.8 20 53 36 19 20 20 44 4 19 5 44 17 37 1 14 20 16 ..... 95 23 03.2 - 7 19
Mon Aug 11/Tue Aug 12 899.8 20 57 33 19 19 20 43 4 20 5 45 17 40 1 18 20 46 ..... 89 23 53.3 - 0 34
Tue Aug 12/Wed Aug 13 900.8 21 01 29 19 18 20 42 4 21 5 45 17 43 1 23 21 16 ..... 81 0 43.8 6 13
Wed Aug 13/Thu Aug 14 901.8 21 05 26 19 17 20 40 4 22 5 46 17 45 1 28 21 47 ..... 71 1 35.7 12 40
Thu Aug 14/Fri Aug 15 902.8 21 09 22 19 16 20 39 4 23 5 47 17 48 1 33 22 21 ..... 60 2 30.2 18 25
Fri Aug 15/Sat Aug 16 903.8 21 13 19 19 15 20 38 4 24 5 47 17 51 1 38 23 02 ..... 49 3 27.8 23 05
Sat Aug 16/Sun Aug 17 904.8 21 17 16 19 13 20 36 4 25 5 48 17 53 1 43 23 49 ..... 37 4 28.5 26 18
Sun Aug 17/Mon Aug 18 905.8 21 21 12 19 12 20 35 4 26 5 49 17 56 1 48 0 45 ..... 27 5 31.2 27 48
Mon Aug 18/Tue Aug 19 906.8 21 25 09 19 11 20 34 4 27 5 49 17 58 1 52 1 48 ..... 17 6 33.9 27 29
Tue Aug 19/Wed Aug 20 907.8 21 29 05 19 10 20 32 4 27 5 50 18 01 1 57 2 55 ..... 10 7 34.5 25 27
Wed Aug 20/Thu Aug 21 908.8 21 33 02 19 09 20 31 4 28 5 50 18 04 2 02 4 03 17 52 4 8 31.5 21 57
Thu Aug 21/Fri Aug 22 909.8 21 36 58 19 08 20 30 4 29 5 51 18 06 2 07 5 09 18 31 1 9 24.4 17 20
Fri Aug 22/Sat Aug 23 910.8 21 40 55 19 07 20 28 4 30 5 52 18 09 2 12 6 12 19 03 0 10 13.5 11 59
Sat Aug 23/Sun Aug 24 911.8 21 44 51 19 06 20 27 4 31 5 52 18 11 2 17 ..... 19 32 1 10 59.6 6 13
Sun Aug 24/Mon Aug 25 912.8 21 48 48 19 04 20 25 4 32 5 53 18 14 2 21 ..... 19 58 4 11 43.8 0 18
Mon Aug 25/Tue Aug 26 913.8 21 52 45 19 03 20 24 4 33 5 54 18 16 2 26 ..... 20 24 9 12 26.9 - 5 32
Tue Aug 26/Wed Aug 27 914.8 21 56 41 19 02 20 23 4 34 5 54 18 19 2 31 ..... 20 49 15 13 10.1 -11 07
Wed Aug 27/Thu Aug 28 915.8 22 00 38 19 01 20 21 4 34 5 55 18 21 2 36 ..... 21 17 23 13 54.2 -16 15
Thu Aug 28/Fri Aug 29 916.8 22 04 34 18 59 20 20 4 35 5 56 18 24 2 41 ..... 21 47 31 14 40.1 -20 46
Fri Aug 29/Sat Aug 30 917.8 22 08 31 18 58 20 18 4 36 5 56 18 26 2 45 ..... 22 21 40 15 28.5 -24 30
Sat Aug 30/Sun Aug 31 918.8 22 12 27 18 57 20 17 4 37 5 57 18 29 2 50 ..... 23 00 50 16 19.6 -27 16
Sun Aug 31/Mon Sep 01 919.8 22 16 24 18 56 20 15 4 38 5 57 18 31 2 55 ..... 23 46 59 17 13.3 -28 52
***** 2025 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: --------------
(2025 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec
Mon Sep 01/Tue Sep 02 920.8 22 20 20 18 55 20 14 4 38 5 58 18 34 3 00 ..... 0 39 69 18 09.1 -29 07
Tue Sep 02/Wed Sep 03 921.8 22 24 17 18 53 20 13 4 39 5 59 18 36 3 04 ..... 1 38 77 19 05.8 -27 55
Wed Sep 03/Thu Sep 04 922.8 22 28 14 18 52 20 11 4 40 5 59 18 39 3 09 ..... 2 41 86 20 02.2 -25 15
Thu Sep 04/Fri Sep 05 923.8 22 32 10 18 51 20 10 4 41 6 00 18 41 3 14 17 05 3 47 92 20 57.3 -21 11
Fri Sep 05/Sat Sep 06 924.8 22 36 07 18 49 20 08 4 42 6 01 18 44 3 19 17 42 4 53 97 21 50.9 -15 56
Sat Sep 06/Sun Sep 07 925.8 22 40 03 18 48 20 07 4 42 6 01 18 46 3 23 18 15 6 00 100 22 43.0 - 9 44
Sun Sep 07/Mon Sep 08 926.8 22 44 00 18 47 20 05 4 43 6 02 18 49 3 28 18 45 7 07 100 23 34.4 - 2 56
Mon Sep 08/Tue Sep 09 927.8 22 47 56 18 45 20 04 4 44 6 02 18 51 3 33 19 16 ..... 97 0 26.1 4 06
Tue Sep 09/Wed Sep 10 928.8 22 51 53 18 44 20 02 4 45 6 03 18 54 3 37 19 47 ..... 91 1 19.2 10 55
Wed Sep 10/Thu Sep 11 929.8 22 55 49 18 43 20 01 4 45 6 04 18 56 3 42 20 21 ..... 83 2 14.6 17 07
Thu Sep 11/Fri Sep 12 930.8 22 59 46 18 42 20 00 4 46 6 04 18 59 3 47 21 00 ..... 73 3 13.0 22 15
Fri Sep 12/Sat Sep 13 931.8 23 03 43 18 40 19 58 4 47 6 05 19 01 3 51 21 46 ..... 62 4 14.4 25 55
Sat Sep 13/Sun Sep 14 932.8 23 07 39 18 39 19 57 4 48 6 05 19 04 3 56 22 40 ..... 51 5 17.5 27 50
Sun Sep 14/Mon Sep 15 933.8 23 11 36 18 38 19 55 4 48 6 06 19 06 4 01 23 41 ..... 40 6 20.6 27 55
Mon Sep 15/Tue Sep 16 934.8 23 15 32 18 36 19 54 4 49 6 07 19 09 4 05 0 47 ..... 29 7 21.5 26 14
Tue Sep 16/Wed Sep 17 935.8 23 19 29 18 35 19 52 4 50 6 07 19 11 4 10 1 54 ..... 20 8 18.8 23 04
Wed Sep 17/Thu Sep 18 936.8 23 23 25 18 34 19 51 4 50 6 08 19 14 4 15 2 59 ..... 12 9 11.9 18 44
Thu Sep 18/Fri Sep 19 937.8 23 27 22 18 32 19 50 4 51 6 08 19 16 4 19 4 02 17 05 6 10 01.2 13 37
Fri Sep 19/Sat Sep 20 938.8 23 31 18 18 31 19 48 4 52 6 09 19 19 4 24 5 02 17 34 2 10 47.5 8 00
Sat Sep 20/Sun Sep 21 939.8 23 35 15 18 30 19 47 4 53 6 10 19 21 4 29 5 59 18 01 0 11 31.6 2 09
Sun Sep 21/Mon Sep 22 940.8 23 39 12 18 28 19 45 4 53 6 10 19 24 4 33 6 56 18 26 0 12 14.7 - 3 42
Mon Sep 22/Tue Sep 23 941.8 23 43 08 18 27 19 44 4 54 6 11 19 26 4 38 ..... 18 52 2 12 57.6 - 9 21
Tue Sep 23/Wed Sep 24 942.8 23 47 05 18 26 19 43 4 55 6 12 19 29 4 43 ..... 19 18 6 13 41.3 -14 37
Wed Sep 24/Thu Sep 25 943.8 23 51 01 18 24 19 41 4 55 6 12 19 31 4 47 ..... 19 47 11 14 26.5 -19 20
Thu Sep 25/Fri Sep 26 944.8 23 54 58 18 23 19 40 4 56 6 13 19 34 4 52 ..... 20 19 17 15 13.8 -23 18
Fri Sep 26/Sat Sep 27 945.8 23 58 54 18 22 19 38 4 57 6 13 19 37 4 56 ..... 20 56 25 16 03.6 -26 21
Sat Sep 27/Sun Sep 28 946.8 0 02 51 18 20 19 37 4 57 6 14 19 39 5 01 ..... 21 39 33 16 55.7 -28 18
Sun Sep 28/Mon Sep 29 947.8 0 06 47 18 19 19 36 4 58 6 15 19 42 5 06 ..... 22 29 43 17 49.8 -29 00
Mon Sep 29/Tue Sep 30 948.8 0 10 44 18 18 19 34 4 59 6 15 19 44 5 10 ..... 23 24 52 18 44.9 -28 20
Tue Sep 30/Wed Oct 01 949.8 0 14 41 18 17 19 33 4 59 6 16 19 47 5 15 ..... 0 25 62 19 40.0 -26 15
***** 2025 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: --------------
(2025 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec
Wed Oct 01/Thu Oct 02 950.8 0 18 37 18 15 19 32 5 00 6 17 19 50 5 20 ..... 1 28 72 20 34.3 -22 50
Thu Oct 02/Fri Oct 03 951.8 0 22 34 18 14 19 30 5 01 6 17 19 52 5 24 ..... 2 33 81 21 27.4 -18 09
Fri Oct 03/Sat Oct 04 952.8 0 26 30 18 13 19 29 5 01 6 18 19 55 5 29 ..... 3 38 89 22 19.3 -12 26
Sat Oct 04/Sun Oct 05 953.8 0 30 27 18 11 19 28 5 02 6 19 19 58 5 33 16 42 4 45 95 23 10.7 - 5 54
Sun Oct 05/Mon Oct 06 954.8 0 34 23 18 10 19 27 5 03 6 19 20 00 5 38 17 12 5 52 99 0 02.6 1 07
Mon Oct 06/Tue Oct 07 955.8 0 38 20 18 09 19 25 5 03 6 20 20 03 5 43 17 44 7 03 100 0 55.9 8 12
Tue Oct 07/Wed Oct 08 956.8 0 42 16 18 08 19 24 5 04 6 21 20 06 5 47 18 17 ..... 98 1 51.9 14 54
Wed Oct 08/Thu Oct 09 957.8 0 46 13 18 06 19 23 5 05 6 21 20 08 5 52 18 55 ..... 93 2 51.3 20 40
Thu Oct 09/Fri Oct 10 958.8 0 50 10 18 05 19 22 5 05 6 22 20 11 5 56 19 40 ..... 86 3 54.1 25 02
Fri Oct 10/Sat Oct 11 959.8 0 54 06 18 04 19 21 5 06 6 23 20 14 6 01 20 32 ..... 76 4 59.4 27 35
Sat Oct 11/Sun Oct 12 960.8 0 58 03 18 03 19 19 5 07 6 23 20 17 6 06 21 33 ..... 66 6 04.7 28 10
Sun Oct 12/Mon Oct 13 961.8 1 01 59 18 02 19 18 5 07 6 24 20 19 6 10 22 39 ..... 54 7 07.8 26 51
Mon Oct 13/Tue Oct 14 962.8 1 05 56 18 00 19 17 5 08 6 25 20 22 6 15 23 46 ..... 43 8 06.8 23 57
Tue Oct 14/Wed Oct 15 963.8 1 09 52 17 59 19 16 5 09 6 26 20 25 6 19 0 52 ..... 33 9 01.2 19 50
Wed Oct 15/Thu Oct 16 964.8 1 13 49 17 58 19 15 5 09 6 26 20 28 6 24 1 55 ..... 24 9 51.1 14 52
Thu Oct 16/Fri Oct 17 965.8 1 17 45 17 57 19 14 5 10 6 27 20 31 6 29 2 55 ..... 16 10 37.7 9 23
Fri Oct 17/Sat Oct 18 966.8 1 21 42 17 56 19 13 5 11 6 28 20 34 6 33 3 53 ..... 9 11 21.8 3 37
Sat Oct 18/Sun Oct 19 967.8 1 25 39 17 55 19 12 5 11 6 28 20 36 6 38 4 49 16 30 4 12 04.7 - 2 10
Sun Oct 19/Mon Oct 20 968.8 1 29 35 17 54 19 11 5 12 6 29 20 39 6 43 5 44 16 55 1 12 47.3 - 7 49
Mon Oct 20/Tue Oct 21 969.8 1 33 32 17 53 19 10 5 13 6 30 20 42 6 47 6 40 17 21 0 13 30.5 -13 09
Tue Oct 21/Wed Oct 22 970.8 1 37 28 17 51 19 09 5 14 6 31 20 45 6 52 7 37 17 49 1 14 15.1 -17 59
Wed Oct 22/Thu Oct 23 971.8 1 41 25 17 50 19 08 5 14 6 31 20 48 6 57 ..... 18 20 3 15 01.7 -22 07
Thu Oct 23/Fri Oct 24 972.8 1 45 21 17 49 19 07 5 15 6 32 20 51 7 01 ..... 18 56 7 15 50.6 -25 24
Fri Oct 24/Sat Oct 25 973.8 1 49 18 17 48 19 06 5 16 6 33 20 54 7 06 ..... 19 36 12 16 41.8 -27 37
Sat Oct 25/Sun Oct 26 974.8 1 53 14 17 47 19 05 5 16 6 34 20 57 7 10 ..... 20 23 19 17 34.8 -28 38
Sun Oct 26/Mon Oct 27 975.8 1 57 11 17 46 19 04 5 17 6 35 21 00 7 15 ..... 21 16 27 18 28.7 -28 21
Mon Oct 27/Tue Oct 28 976.8 2 01 08 17 45 19 03 5 18 6 35 21 03 7 20 ..... 22 13 36 19 22.5 -26 44
Tue Oct 28/Wed Oct 29 977.8 2 05 04 17 45 19 02 5 18 6 36 21 06 7 24 ..... 23 14 45 20 15.5 -23 50
Wed Oct 29/Thu Oct 30 978.8 2 09 01 17 44 19 01 5 19 6 37 21 09 7 29 ..... 0 16 55 21 07.2 -19 44
Thu Oct 30/Fri Oct 31 979.8 2 12 57 17 43 19 00 5 20 6 38 21 13 7 34 ..... 1 19 66 21 57.7 -14 36
Fri Oct 31/Sat Nov 01 980.8 2 16 54 17 42 19 00 5 21 6 39 21 16 7 38 ..... 2 23 76 22 47.5 - 8 35
***** 2025 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: --------------
(2025 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec
Sat Nov 01/Sun Nov 02 981.8 2 20 50 17 41 18 59 5 21 6 39 21 19 7 43 ..... 3 29 85 23 37.8 - 1 57
Sun Nov 02/Mon Nov 03 982.8 2 24 47 17 40 18 58 5 22 6 40 21 22 7 48 ..... 4 36 92 0 29.4 5 00
Mon Nov 03/Tue Nov 04 983.8 2 28 43 17 39 18 57 5 23 6 41 21 25 7 52 16 10 5 48 97 1 23.9 11 53
Tue Nov 04/Wed Nov 05 984.8 2 32 40 17 38 18 57 5 23 6 42 21 29 7 57 16 46 7 03 100 2 22.3 18 11
Wed Nov 05/Thu Nov 06 985.8 2 36 37 17 38 18 56 5 24 6 43 21 32 8 02 17 28 ..... 99 3 25.1 23 20
Thu Nov 06/Fri Nov 07 986.8 2 40 33 17 37 18 55 5 25 6 44 21 35 8 06 18 18 ..... 95 4 31.7 26 47
Fri Nov 07/Sat Nov 08 987.8 2 44 30 17 36 18 55 5 26 6 44 21 39 8 11 19 18 ..... 88 5 40.1 28 11
Sat Nov 08/Sun Nov 09 988.8 2 48 26 17 36 18 54 5 26 6 45 21 42 8 16 20 24 ..... 80 6 46.9 27 28
Sun Nov 09/Mon Nov 10 989.8 2 52 23 17 35 18 54 5 27 6 46 21 45 8 20 21 34 ..... 70 7 49.7 24 55
Mon Nov 10/Tue Nov 11 990.8 2 56 19 17 34 18 53 5 28 6 47 21 49 8 25 22 43 ..... 59 8 47.2 20 58
Tue Nov 11/Wed Nov 12 991.8 3 00 16 17 34 18 53 5 29 6 48 21 52 8 30 23 48 ..... 49 9 39.4 16 04
Wed Nov 12/Thu Nov 13 992.8 3 04 12 17 33 18 52 5 29 6 49 21 56 8 35 0 50 ..... 38 10 27.4 10 36
Thu Nov 13/Fri Nov 14 993.8 3 08 09 17 32 18 52 5 30 6 50 21 59 8 39 1 48 ..... 29 11 12.4 4 51
Fri Nov 14/Sat Nov 15 994.8 3 12 05 17 32 18 51 5 31 6 51 22 03 8 44 2 44 ..... 20 11 55.5 - 0 56
Sat Nov 15/Sun Nov 16 995.8 3 16 02 17 31 18 51 5 32 6 51 22 06 8 49 3 39 ..... 13 12 38.0 - 6 35
Sun Nov 16/Mon Nov 17 996.8 3 19 59 17 31 18 51 5 32 6 52 22 10 8 53 4 35 ..... 8 13 20.9 -11 57
Mon Nov 17/Tue Nov 18 997.8 3 23 55 17 30 18 50 5 33 6 53 22 13 8 58 5 31 15 52 4 14 05.0 -16 51
Tue Nov 18/Wed Nov 19 998.8 3 27 52 17 30 18 50 5 34 6 54 22 17 9 03 6 28 16 22 1 14 51.1 -21 07
Wed Nov 19/Thu Nov 20 999.8 3 31 48 17 29 18 50 5 35 6 55 22 21 9 07 7 26 16 56 0 15 39.5 -24 33
Thu Nov 20/Fri Nov 21 1000.8 3 35 45 17 29 18 49 5 35 6 56 22 24 9 12 ..... 17 35 1 16 30.2 -26 59
Fri Nov 21/Sat Nov 22 1001.8 3 39 41 17 29 18 49 5 36 6 57 22 28 9 17 ..... 18 20 4 17 22.7 -28 15
Sat Nov 22/Sun Nov 23 1002.8 3 43 38 17 28 18 49 5 37 6 58 22 32 9 22 ..... 19 11 8 18 16.2 -28 14
Sun Nov 23/Mon Nov 24 1003.8 3 47 34 17 28 18 49 5 38 6 58 22 35 9 26 ..... 20 07 14 19 09.6 -26 55
Mon Nov 24/Tue Nov 25 1004.8 3 51 31 17 28 18 49 5 38 6 59 22 39 9 31 ..... 21 07 21 20 01.9 -24 20
Tue Nov 25/Wed Nov 26 1005.8 3 55 28 17 28 18 48 5 39 7 00 22 43 9 36 ..... 22 07 29 20 52.7 -20 37
Wed Nov 26/Thu Nov 27 1006.8 3 59 24 17 27 18 48 5 40 7 01 22 47 9 40 ..... 23 08 39 21 41.9 -15 54
Thu Nov 27/Fri Nov 28 1007.8 4 03 21 17 27 18 48 5 41 7 02 22 51 9 45 ..... 0 10 49 22 30.1 -10 22
Fri Nov 28/Sat Nov 29 1008.8 4 07 17 17 27 18 48 5 41 7 03 22 55 9 50 ..... 1 12 60 23 18.1 - 4 12
Sat Nov 29/Sun Nov 30 1009.8 4 11 14 17 27 18 48 5 42 7 03 22 59 9 54 ..... 2 16 71 0 07.0 2 22
Sun Nov 30/Mon Dec 01 1010.8 4 15 10 17 27 18 48 5 43 7 04 23 02 9 59 ..... 3 23 80 0 58.2 9 03
***** 2025 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: --------------
(2025 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec
Mon Dec 01/Tue Dec 02 1011.8 4 19 07 17 27 18 48 5 44 7 05 23 06 10 04 ..... 4 34 89 1 53.2 15 28
Tue Dec 02/Wed Dec 03 1012.8 4 23 03 17 27 18 48 5 44 7 06 23 10 10 08 ..... 5 49 95 2 52.9 21 06
Wed Dec 03/Thu Dec 04 1013.8 4 27 00 17 27 18 48 5 45 7 07 23 14 10 13 16 01 7 06 99 3 57.8 25 23
Thu Dec 04/Fri Dec 05 1014.8 4 30 57 17 27 18 48 5 46 7 07 23 19 10 18 16 56 8 20 100 5 06.5 27 47
Fri Dec 05/Sat Dec 06 1015.8 4 34 53 17 27 18 49 5 46 7 08 23 23 10 22 18 01 ..... 97 6 16.1 28 00
Sat Dec 06/Sun Dec 07 1016.8 4 38 50 17 27 18 49 5 47 7 09 23 27 10 27 19 12 ..... 92 7 23.2 26 06
Sun Dec 07/Mon Dec 08 1017.8 4 42 46 17 27 18 49 5 48 7 10 23 31 10 32 20 24 ..... 84 8 25.3 22 30
Mon Dec 08/Tue Dec 09 1018.8 4 46 43 17 27 18 49 5 48 7 10 23 35 10 36 21 34 ..... 75 9 21.5 17 41
Tue Dec 09/Wed Dec 10 1019.8 4 50 39 17 27 18 49 5 49 7 11 23 39 10 41 22 39 ..... 65 10 12.6 12 09
Wed Dec 10/Thu Dec 11 1020.8 4 54 36 17 28 18 50 5 50 7 12 23 43 10 45 23 40 ..... 55 10 59.7 6 18
Thu Dec 11/Fri Dec 12 1021.8 4 58 32 17 28 18 50 5 50 7 13 23 48 10 50 0 38 ..... 45 11 44.3 0 23
Fri Dec 12/Sat Dec 13 1022.8 5 02 29 17 28 18 50 5 51 7 13 23 52 10 54 1 34 ..... 35 12 27.5 - 5 24
Sat Dec 13/Sun Dec 14 1023.8 5 06 26 17 28 18 51 5 52 7 14 23 56 10 59 2 29 ..... 27 13 10.6 -10 52
Sun Dec 14/Mon Dec 15 1024.8 5 10 22 17 29 18 51 5 52 7 15 0 00 11 04 3 25 ..... 19 13 54.6 -15 52
Mon Dec 15/Tue Dec 16 1025.8 5 14 19 17 29 18 51 5 53 7 15 0 05 11 08 4 22 ..... 12 14 40.2 -20 16
Tue Dec 16/Wed Dec 17 1026.8 5 18 15 17 29 18 52 5 53 7 16 0 09 11 13 5 19 ..... 7 15 28.1 -23 52
Wed Dec 17/Thu Dec 18 1027.8 5 22 12 17 30 18 52 5 54 7 16 0 13 11 17 6 17 ..... 3 16 18.4 -26 30
Thu Dec 18/Fri Dec 19 1028.8 5 26 08 17 30 18 53 5 54 7 17 0 18 11 22 7 12 16 17 1 17 10.7 -27 59
Fri Dec 19/Sat Dec 20 1029.8 5 30 05 17 31 18 53 5 55 7 17 0 22 11 26 8 04 17 07 0 18 04.3 -28 13
Sat Dec 20/Sun Dec 21 1030.8 5 34 01 17 31 18 53 5 56 7 18 0 27 11 31 ..... 18 02 1 18 58.0 -27 08
Sun Dec 21/Mon Dec 22 1031.8 5 37 58 17 32 18 54 5 56 7 18 0 31 11 35 ..... 19 01 5 19 50.7 -24 46
Mon Dec 22/Tue Dec 23 1032.8 5 41 55 17 32 18 54 5 56 7 19 0 36 11 39 ..... 20 02 9 20 41.7 -21 15
Tue Dec 23/Wed Dec 24 1033.8 5 45 51 17 33 18 55 5 57 7 19 0 40 11 44 ..... 21 02 16 21 30.8 -16 45
Wed Dec 24/Thu Dec 25 1034.8 5 49 48 17 33 18 56 5 57 7 20 0 45 11 48 ..... 22 03 24 22 18.3 -11 27
Thu Dec 25/Fri Dec 26 1035.8 5 53 44 17 34 18 56 5 58 7 20 0 49 11 53 ..... 23 04 33 23 05.1 - 5 33
Fri Dec 26/Sat Dec 27 1036.8 5 57 41 17 34 18 57 5 58 7 20 0 54 11 57 ..... 0 05 44 23 52.1 0 43
Sat Dec 27/Sun Dec 28 1037.8 6 01 37 17 35 18 57 5 59 7 21 0 58 12 01 ..... 1 08 55 0 40.5 7 08
Sun Dec 28/Mon Dec 29 1038.8 6 05 34 17 36 18 58 5 59 7 21 1 03 12 05 ..... 2 15 66 1 31.8 13 23
Mon Dec 29/Tue Dec 30 1039.8 6 09 30 17 36 18 59 5 59 7 21 1 07 12 10 ..... 3 26 76 2 27.3 19 06
Tue Dec 30/Wed Dec 31 1040.8 6 13 27 17 37 18 59 6 00 7 22 1 12 12 14 ..... 4 40 86 3 27.8 23 49
Wed Dec 31/Thu Jan 01 1041.8 6 17 24 17 38 19 00 6 00 7 22 1 16 12 18 ..... 5 54 93 4 33.3 26 59
Updated on January 3, 2022, 11:08 am