LICK OBSERVATORY CALENDAR FOR 2021 -ASTRONOMICAL (computed for altitude 1283.0 m) ASTRONOMICAL(18 deg) TWILIGHT/DAWN MOON(midnight) DATE(PST) 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 WED DEC 01 16 57 17 50 18 22 04 54 05 30 06 01 06 55 23 00 04 39 10 10 11.1 10.5 94 1443-1414 >90 THU DEC 02 16 57 17 50 18 22 06 12 05 31 06 02 06 56 23 04 04 43 10 15 11.1 11.1 100 1541-1927 >90 FRI DEC 03 16 56 17 50 18 22 07 29 16 32 05 31 06 03 06 57 23 08 04 47 10 19 11.1 11.1 100 1644-2330 >90 SAT DEC 04 16 56 17 50 18 22 08 43 17 24 05 32 06 04 06 57 23 12 04 51 10 24 11.2 11.2 100 1749-2555 >90 SUN DEC 05 16 56 17 50 18 22 18 26 05 33 06 04 06 58 23 16 04 55 10 29 11.2 11.1 99 1856-2630 >90 MON DEC 06 16 56 17 50 18 22 19 35 05 34 06 05 06 59 23 20 04 59 10 34 11.2 10.0 89 2000-2513 >90 TUE DEC 07 16 56 17 50 18 22 20 47 05 34 06 06 07 00 23 24 05 03 10 38 11.2 8.8 78 2101-2220 >90 WED DEC 08 16 56 17 50 18 22 21 58 05 35 06 07 07 01 23 28 05 07 10 42 11.2 7.6 67 2158-1815 >90 THU DEC 09 16 56 17 50 18 22 23 06 05 36 06 08 07 02 23 32 05 11 10 47 11.2 6.5 57 2250-1322 >90 FRI DEC 10 16 56 17 50 18 22 00 10 05 37 06 08 07 02 23 36 05 14 10 52 11.2 5.5 48 2340-0738 90 SAT DEC 11 16 57 17 51 18 22 01 11 05 37 06 09 07 03 23 39 05 18 10 56 11.2 4.4 39 0024-0226 79 SUN DEC 12 16 57 17 51 18 23 02 11 05 38 06 10 07 04 23 44 05 22 11 01 11.2 3.4 30 0108 0300 67 MON DEC 13 16 57 17 51 18 23 03 10 05 39 06 10 07 05 23 48 05 26 11 06 11.3 2.5 22 0153 0819 56 TUE DEC 14 16 57 17 51 18 23 04 09 05 39 06 11 07 05 23 52 05 30 11 10 11.3 1.5 13 0238 1315 45 WED DEC 15 16 57 17 52 18 23 05 08 05 40 06 12 07 06 23 56 05 34 11 15 11.3 0.5 4 0325 1738 35 THU DEC 16 16 58 17 52 18 24 06 08 05 41 06 12 07 07 00 01 05 38 11 20 11.3 0.0 0 0413 2117 24 FRI DEC 17 16 58 17 52 18 24 07 06 05 41 06 13 07 07 00 05 05 42 11 24 11.3 0.0 0 0504 2401 16 SAT DEC 18 16 58 17 53 18 25 16 22 08 02 05 42 06 14 07 08 00 10 05 46 11 29 11.3 0.0 0 0556 2540 12 SUN DEC 19 16 59 17 53 18 25 17 08 08 53 05 42 06 14 07 09 00 14 05 50 11 33 11.3 0.0 0 0650 2606 17 MON DEC 20 16 59 17 54 18 25 18 02 05 43 06 15 07 09 00 18 05 54 11 38 11.3 0.0 0 0744 2517 26 TUE DEC 21 17 00 17 54 18 26 19 00 05 43 06 15 07 10 00 23 05 58 11 42 11.3 0.6 5 0837 2313 37 WED DEC 22 17 00 17 55 18 26 20 01 05 44 06 16 07 10 00 27 06 02 11 47 11.3 1.6 14 0928 2004 48 THU DEC 23 17 01 17 55 18 27 21 03 05 44 06 16 07 11 00 32 06 06 11 51 11.3 2.6 23 1018 1557 59 FRI DEC 24 17 01 17 56 18 27 22 06 05 45 06 17 07 11 00 36 06 10 11 56 11.3 3.6 32 1106 1104 71 SAT DEC 25 17 02 17 56 18 28 23 09 05 45 06 17 07 11 00 41 06 14 12 00 11.3 4.7 41 1153 0534 83 SUN DEC 26 17 02 17 57 18 29 00 14 05 46 06 17 07 12 00 46 06 18 12 04 11.3 5.7 50 1241-0011 >90 MON DEC 27 17 03 17 57 18 29 01 21 05 46 06 18 07 12 00 50 06 21 12 08 11.3 6.9 60 1330-0610 >90 TUE DEC 28 17 04 17 58 18 30 02 30 05 46 06 18 07 12 00 55 06 25 12 12 11.3 8.0 71 1422-1202 >90 WED DEC 29 17 04 17 59 18 30 03 43 05 47 06 18 07 13 00 58 06 29 12 17 11.3 9.2 81 1517-1725 >90 THU DEC 30 17 05 17 59 18 31 04 59 05 47 06 19 07 13 01 03 06 33 12 21 11.3 10.5 92 1616-2155 >90 FRI DEC 31 17 06 18 00 18 32 06 15 05 47 06 19 07 13 01 08 06 37 12 25 11.3 11.3 100 1719-2502 >90 ONE LINE REFERS TO EVENING DATE NEW MOON Dec 04 07:44 UT AND FOLLOWING MORNING. FIRST QUARTER Dec 11 01:34 UT All dates and times are zone PST FULL MOON Dec 19 04:37 UT in upper table (except sid time). LAST QUARTER Dec 27 02:25 UT