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 MON FEB 01 17 37 18 29 19 00 21 57 05 40 06 11 07 03 03 44 08 44 14 25 10.7 3.0 27 1254-0106 69 TUE FEB 02 17 38 18 30 19 01 23 06 05 40 06 10 07 02 03 48 08 48 14 29 10.7 4.1 38 1346-0655 82 WED FEB 03 17 39 18 31 19 02 00 16 05 39 06 10 07 01 03 53 08 52 14 32 10.6 5.2 49 1439-1233 >90 THU FEB 04 17 40 18 32 19 03 01 26 05 38 06 09 07 00 03 58 08 56 14 35 10.6 6.4 60 1534-1725 >90 FRI FEB 05 17 42 18 33 19 03 02 36 05 37 06 08 06 59 04 02 09 00 14 38 10.6 7.6 71 1631-2119 >90 SAT FEB 06 17 43 18 34 19 04 03 44 05 37 06 07 06 58 04 07 09 04 14 42 10.5 8.7 82 1730-2357 >90 SUN FEB 07 17 44 18 35 19 05 04 48 05 36 06 06 06 57 04 12 09 08 14 45 10.5 9.7 92 1830-2509 >90 MON FEB 08 17 45 18 36 19 06 05 44 05 35 06 05 06 56 04 17 09 12 14 48 10.5 10.5 100 1930-2449 >90 TUE FEB 09 17 46 18 37 19 07 06 32 05 34 06 04 06 55 04 22 09 16 14 51 10.4 10.4 100 2029-2304 >90 WED FEB 10 17 47 18 38 19 08 07 12 16 48 05 33 06 03 06 54 04 27 09 20 14 54 10.4 10.4 100 2124-2006 >90 THU FEB 11 17 48 18 39 19 09 07 46 17 53 05 32 06 03 06 53 04 32 09 24 14 57 10.4 10.4 100 2216-1612 >90 FRI FEB 12 17 49 18 40 19 10 08 16 18 57 05 31 06 02 06 52 04 37 09 28 15 00 10.4 10.4 100 2305-1138 >90 SAT FEB 13 17 50 18 41 19 11 08 43 19 58 05 30 06 01 06 51 04 42 09 32 15 03 10.3 9.5 92 2351-0642 >90 SUN FEB 14 17 51 18 42 19 12 20 58 05 29 05 59 06 50 04 47 09 36 15 06 10.3 8.5 82 0036-0136 >90 MON FEB 15 17 52 18 43 19 13 21 56 05 28 05 58 06 49 04 52 09 40 15 08 10.2 7.5 73 0119 0329 >90 TUE FEB 16 17 53 18 44 19 14 22 53 05 27 05 57 06 48 04 57 09 44 15 11 10.2 6.6 64 0203 0821 >90 WED FEB 17 17 54 18 45 19 15 23 51 05 26 05 56 06 46 05 02 09 47 15 14 10.2 5.6 54 0247 1254 >90 THU FEB 18 17 55 18 46 19 16 00 49 05 25 05 55 06 45 05 07 09 51 15 17 10.2 4.6 45 0334 1652 83 FRI FEB 19 17 56 18 47 19 17 01 48 05 24 05 54 06 44 05 12 09 55 15 20 10.1 3.6 35 0422 2019 73 SAT FEB 20 17 57 18 48 19 18 02 47 05 23 05 53 06 43 05 17 09 59 15 23 10.1 2.6 25 0513 2252 62 SUN FEB 21 17 58 18 49 19 19 03 44 05 21 05 52 06 42 05 21 10 03 15 25 10.0 1.6 16 0606 2423 52 MON FEB 22 17 59 18 49 19 20 04 38 05 20 05 50 06 40 05 26 10 07 15 28 10.0 0.7 7 0702 2441 41 TUE FEB 23 18 00 18 50 19 21 05 27 05 19 05 49 06 39 05 31 10 11 15 31 10.0 0.0 0 0800 2336 31 WED FEB 24 18 01 18 51 19 22 06 10 05 18 05 48 06 38 05 36 10 15 15 34 9.9 0.0 0 0857 2108 23 THU FEB 25 18 02 18 52 19 23 16 11 06 48 05 16 05 47 06 36 05 41 10 19 15 36 9.9 0.0 0 0954 1721 21 FRI FEB 26 18 03 18 53 19 24 17 21 07 22 05 15 05 45 06 35 05 46 10 23 15 39 9.9 0.0 0 1050 1228 26 SAT FEB 27 18 04 18 54 19 24 18 32 07 54 05 14 05 44 06 34 05 50 10 27 15 42 9.8 0.0 0 1144 0646 35 SUN FEB 28 18 05 18 55 19 25 19 43 08 24 05 13 05 43 06 32 05 55 10 31 15 45 9.8 0.3 3 1237 0037 47 ONE LINE REFERS TO EVENING DATE LAST QUARTER Feb 04 17:37 UT AND FOLLOWING MORNING. NEW MOON Feb 11 19:05 UT All dates and times are zone PST FIRST QUARTER Feb 19 18:47 UT in upper table (except sid time). FULL MOON Feb 27 08:16 UT