KECK OBSERVATORY CALENDAR FOR 2021 -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 2021 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 MON NOV 01 17 58 18 37 19 03 04 02 16 03 05 09 05 35 06 13 21 28 02 26 07 36 10.1 9.0 88 1232 0108 >90 TUE NOV 02 17 58 18 36 19 02 05 02 16 42 05 09 05 35 06 13 21 31 02 30 07 39 10.1 10.0 98 1323-0510 >90 WED NOV 03 17 57 18 36 19 02 06 05 17 24 05 09 05 35 06 14 21 35 02 34 07 43 10.1 10.1 100 1417-1120 >90 THU NOV 04 17 57 18 36 19 02 18 09 05 10 05 36 06 14 21 39 02 38 07 48 10.1 10.1 100 1513-1657 >90 FRI NOV 05 17 56 18 35 19 01 18 59 05 10 05 36 06 15 21 42 02 41 07 52 10.2 10.2 100 1613-2135 >90 SAT NOV 06 17 56 18 35 19 01 19 55 05 11 05 37 06 15 21 46 02 45 07 57 10.2 9.3 91 1716-2448 >90 SUN NOV 07 17 56 18 34 19 01 20 56 05 11 05 37 06 16 21 50 02 49 08 01 10.2 8.3 81 1821-2618 >90 MON NOV 08 17 55 18 34 19 00 22 00 05 11 05 38 06 16 21 52 02 53 08 05 10.2 7.2 70 1925-2600 >90 TUE NOV 09 17 55 18 34 19 00 23 04 05 12 05 38 06 17 21 56 02 57 08 10 10.2 6.1 60 2026-2403 >90 WED NOV 10 17 55 18 34 19 00 00 06 05 12 05 38 06 17 22 00 03 01 08 14 10.2 5.1 49 2129-2017 >90 THU NOV 11 17 54 18 33 18 59 01 04 05 13 05 39 06 18 22 03 03 05 08 19 10.2 4.1 40 2217-1622 79 FRI NOV 12 17 54 18 33 18 59 01 58 05 13 05 39 06 18 22 07 03 09 08 23 10.2 3.2 31 2307-1124 67 SAT NOV 13 17 54 18 33 18 59 14 28 02 51 05 14 05 40 06 19 22 11 03 13 08 28 10.2 2.4 23 2354-0600 55 SUN NOV 14 17 53 18 33 18 59 15 02 03 41 05 14 05 40 06 20 22 15 03 17 08 32 10.2 1.5 15 0039-0027 44 MON NOV 15 17 53 18 32 18 59 15 36 04 31 05 14 05 41 06 20 22 19 03 21 08 36 10.2 0.7 6 0124 0503 32 TUE NOV 16 17 53 18 32 18 59 16 09 05 21 05 15 05 41 06 21 22 23 03 25 08 41 10.3 0.0 0 0209 1018 21 WED NOV 17 17 53 18 32 18 59 16 43 06 12 05 15 05 42 06 21 22 27 03 29 08 45 10.3 0.0 0 0255 1507 09 THU NOV 18 17 53 18 32 18 58 17 20 05 16 05 42 06 22 22 30 03 33 08 50 10.3 0.0 0 0342 1917 02 FRI NOV 19 17 52 18 32 18 58 17 59 05 16 05 43 06 22 22 34 03 37 08 54 10.3 0.0 0 0432 2239 13 SAT NOV 20 17 52 18 32 18 58 18 42 05 17 05 43 06 23 22 38 03 41 08 58 10.3 0.0 0 0524 2500 24 SUN NOV 21 17 52 18 32 18 58 19 28 05 17 05 44 06 24 22 42 03 45 09 02 10.3 0.5 4 0616 2612 35 MON NOV 22 17 52 18 32 18 58 20 19 05 18 05 45 06 24 22 46 03 48 09 07 10.3 1.4 13 0710 2611 47 TUE NOV 23 17 52 18 32 18 58 21 11 05 18 05 45 06 25 22 50 03 52 09 11 10.3 2.2 21 0803 2455 58 WED NOV 24 17 52 18 32 18 58 22 06 05 19 05 46 06 25 22 54 03 56 09 16 10.3 3.1 30 0855 2229 69 THU NOV 25 17 52 18 32 18 58 23 00 05 19 05 46 06 26 22 57 04 00 09 20 10.3 4.0 38 0946 1858 81 FRI NOV 26 17 52 18 32 18 59 23 55 05 20 05 47 06 27 23 02 04 04 09 25 10.3 4.9 47 1030 1405 >90 SAT NOV 27 17 52 18 32 18 59 00 50 05 21 05 47 06 27 23 06 04 08 09 30 10.4 5.8 56 1124 0925 >90 SUN NOV 28 17 52 18 32 18 59 01 46 05 21 05 48 06 28 23 10 04 12 09 34 10.4 6.8 65 1213 0341 >90 MON NOV 29 17 52 18 32 18 59 02 43 14 35 05 22 05 48 06 28 23 14 04 16 09 39 10.4 7.7 74 1302-0224 >90 TUE NOV 30 17 52 18 32 18 59 03 43 15 14 05 22 05 49 06 29 23 18 04 20 09 43 10.4 8.7 84 1353-0834 >90 ONE LINE REFERS TO EVENING DATE NEW MOON Nov 04 21:16 UT AND FOLLOWING MORNING. FIRST QUARTER Nov 11 12:45 UT All dates and times are zone HST FULL MOON Nov 19 08:57 UT in upper table (except sid time). LAST QUARTER Nov 27 12:29 UT