KECK OBSERVATORY CALENDAR FOR 2025 -ASTRONOMICAL (computed for altitude 4160.0 m) ASTRONOMICAL(18 deg) TWILIGHT/DAWN MOON(midnight) DATE(HST) SUN TWILIGHT ENDS MOON MOON DAWN BEGINS SUN SIDEREAL TIMES NIGHT (18 deg) Zenith 2025 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ RA DEC Dist 12 18 18 12 18 18 h h % h m d m deg SAT NOV 01 17 58 18 37 19 03 14 58 03 37 05 09 05 35 06 13 21 28 02 26 07 36 10.1 1.5 15 2344-0054 45 SUN NOV 02 17 58 18 36 19 02 15 35 04 37 05 09 05 35 06 13 21 31 02 30 07 40 10.1 0.5 5 0036 0605 31 MON NOV 03 17 57 18 36 19 02 16 16 05 41 05 09 05 35 06 14 21 35 02 34 07 44 10.1 0.0 0 0131 1255 17 TUE NOV 04 17 57 18 36 19 02 17 00 06 49 05 10 05 36 06 14 21 39 02 38 07 48 10.1 0.0 0 0230 1906 02 WED NOV 05 17 56 18 35 19 01 17 50 05 10 05 36 06 15 21 42 02 42 07 52 10.2 0.0 0 0333 2404 13 THU NOV 06 17 56 18 35 19 01 18 46 05 11 05 37 06 15 21 46 02 46 07 57 10.2 0.0 0 0440 2717 27 FRI NOV 07 17 56 18 34 19 01 19 49 05 11 05 37 06 16 21 50 02 49 08 01 10.2 0.8 7 0548 2825 41 SAT NOV 08 17 55 18 34 19 00 20 56 05 11 05 38 06 16 21 53 02 53 08 05 10.2 1.9 18 0655 2727 55 SUN NOV 09 17 55 18 34 19 00 22 02 05 12 05 38 06 17 21 57 02 57 08 10 10.2 3.0 29 0757 2441 69 MON NOV 10 17 55 18 34 19 00 23 05 05 12 05 38 06 17 22 00 03 01 08 14 10.2 4.1 40 0854 2033 82 TUE NOV 11 17 54 18 33 18 59 00 03 05 13 05 39 06 18 22 03 03 05 08 19 10.2 5.1 49 0946 1535 >90 WED NOV 12 17 54 18 33 18 59 00 58 05 13 05 39 06 18 22 07 03 09 08 23 10.2 6.0 58 1034 1003 >90 THU NOV 13 17 54 18 33 18 59 01 49 14 05 05 14 05 40 06 19 22 11 03 13 08 28 10.2 6.8 66 1118 0418 >90 FRI NOV 14 17 53 18 33 18 59 02 39 14 37 05 14 05 40 06 20 22 15 03 17 08 32 10.2 7.7 74 1201-0129 >90 SAT NOV 15 17 53 18 32 18 59 03 27 15 08 05 14 05 41 06 20 22 19 03 21 08 36 10.2 8.5 82 1244-0706 >90 SUN NOV 16 17 53 18 32 18 59 04 16 15 40 05 15 05 41 06 21 22 23 03 25 08 41 10.3 9.3 90 1327-1225 >90 MON NOV 17 17 53 18 32 18 59 05 06 16 14 05 15 05 42 06 21 22 27 03 29 08 45 10.3 10.1 98 1411-1715 >90 TUE NOV 18 17 53 18 32 18 58 05 58 16 50 05 16 05 42 06 22 22 30 03 33 08 50 10.3 10.3 100 1457-2125 >90 WED NOV 19 17 52 18 32 18 58 06 51 17 30 05 16 05 43 06 22 22 34 03 37 08 54 10.3 10.3 100 1546-2444 >90 THU NOV 20 17 52 18 32 18 58 18 14 05 17 05 43 06 23 22 38 03 41 08 59 10.3 10.3 100 1636-2701 >90 FRI NOV 21 17 52 18 32 18 58 19 02 05 17 05 44 06 24 22 42 03 45 09 03 10.3 10.3 99 1729-2807 >90 SAT NOV 22 17 52 18 32 18 58 19 54 05 18 05 45 06 24 22 46 03 49 09 07 10.3 9.4 90 1822-2757 >90 SUN NOV 23 17 52 18 32 18 58 20 48 05 18 05 45 06 25 22 50 03 53 09 11 10.3 8.5 82 1916-2628 >90 MON NOV 24 17 52 18 32 18 58 21 44 05 19 05 46 06 25 22 54 03 56 09 16 10.3 7.6 73 2008-2345 >90 TUE NOV 25 17 52 18 32 18 58 22 39 05 19 05 46 06 26 22 58 04 00 09 20 10.3 6.7 64 2058-1954 >90 WED NOV 26 17 52 18 32 18 59 23 33 05 20 05 47 06 27 23 03 04 04 09 25 10.3 5.8 55 2148-1505 >90 THU NOV 27 17 52 18 32 18 59 00 28 05 21 05 47 06 27 23 06 04 08 09 30 10.4 4.9 47 2237-0922 87 FRI NOV 28 17 52 18 32 18 59 01 23 05 21 05 48 06 28 23 10 04 12 09 34 10.4 4.0 38 2324-0314 74 SAT NOV 29 17 52 18 32 18 59 02 20 05 22 05 48 06 28 23 14 04 16 09 39 10.4 3.0 29 0013 0324 61 SUN NOV 30 17 52 18 32 18 59 14 07 03 20 05 22 05 49 06 29 23 18 04 20 09 43 10.4 2.0 19 0105 1006 48 ONE LINE REFERS TO EVENING DATE FULL MOON Nov 05 13:20 UT AND FOLLOWING MORNING. LAST QUARTER Nov 12 05:26 UT All dates and times are zone HST NEW MOON Nov 20 06:47 UT in upper table (except sid time). FIRST QUARTER Nov 28 06:59 UT