LICK OBSERVATORY CALENDAR FOR 2023 -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 2023 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 APR 01 18 35 19 26 19 57 04 38 04 23 04 55 05 45 08 31 12 35 16 59 8.4 0.0 0 1008 1604 39 SUN APR 02 18 36 19 27 19 59 05 03 04 22 04 53 05 44 08 37 12 39 17 02 8.4 0.0 0 1053 1103 35 MON APR 03 18 37 19 28 20 00 16 12 05 26 04 20 04 52 05 42 08 42 12 43 17 04 8.3 0.0 0 1138 0531 35 TUE APR 04 18 38 19 29 20 01 17 13 05 48 04 18 04 50 05 41 08 47 12 47 17 06 8.3 0.0 0 1223-0022 38 WED APR 05 18 39 19 30 20 02 18 14 06 12 04 16 04 49 05 40 08 52 12 51 17 08 8.2 0.0 0 1309-0621 44 THU APR 06 18 40 19 31 20 03 19 17 06 38 04 15 04 47 05 38 08 57 12 55 17 10 8.2 0.0 0 1356-1213 52 FRI APR 07 18 41 19 32 20 04 20 23 07 08 04 13 04 45 05 37 09 02 12 59 17 12 8.1 0.3 3 1446-1740 61 SAT APR 08 18 41 19 33 20 05 21 31 07 43 04 11 04 44 05 35 09 07 13 03 17 14 8.1 1.4 17 1540-2221 70 SUN APR 09 18 42 19 34 20 06 22 41 08 27 04 10 04 42 05 34 09 12 13 07 17 17 8.1 2.6 32 1637-2550 80 MON APR 10 18 43 19 35 20 07 23 50 04 08 04 41 05 32 09 17 13 11 17 19 8.0 3.7 46 1736-2732 >90 TUE APR 11 18 44 19 36 20 09 00 53 04 06 04 39 05 31 09 23 13 14 17 21 8.0 4.7 59 1841-2828 >90 WED APR 12 18 45 19 37 20 10 01 49 04 05 04 38 05 29 09 28 13 18 17 24 7.9 5.7 71 1944-2708 >90 THU APR 13 18 46 19 38 20 11 02 36 04 03 04 36 05 28 09 33 13 22 17 26 7.9 6.4 81 2045-2406 >90 FRI APR 14 18 47 19 39 20 12 03 14 04 01 04 35 05 27 09 38 13 26 17 28 7.8 7.0 89 2143-1939 >90 SAT APR 15 18 48 19 40 20 13 03 47 04 00 04 33 05 25 09 43 13 30 17 31 7.8 7.6 97 2238-1408 >90 SUN APR 16 18 49 19 41 20 15 04 15 03 58 04 31 05 24 09 49 13 34 17 33 7.7 7.7 100 2330-0754 >90 MON APR 17 18 50 19 42 20 16 04 42 16 23 03 56 04 30 05 22 09 54 13 38 17 35 7.7 7.7 100 0020-0122 >90 TUE APR 18 18 51 19 43 20 17 05 09 17 32 03 55 04 28 05 21 09 58 13 42 17 38 7.6 7.6 100 0110 0508 >90 WED APR 19 18 51 19 44 20 18 05 36 18 42 03 53 04 27 05 20 10 03 13 46 17 40 7.6 7.6 100 0159 1117 >90 THU APR 20 18 52 19 45 20 19 06 06 19 52 03 51 04 25 05 18 10 08 13 50 17 42 7.5 7.5 100 0250 1645 >90 FRI APR 21 18 53 19 46 20 21 06 41 21 01 03 50 04 24 05 17 10 14 13 54 17 45 7.5 6.8 91 0343 2117 >90 SAT APR 22 18 54 19 47 20 22 07 21 22 08 03 48 04 22 05 16 10 19 13 58 17 46 7.4 5.7 76 0437 2438 >90 SUN APR 23 18 55 19 48 20 23 08 08 23 11 03 46 04 21 05 14 10 24 14 02 17 48 7.4 4.6 62 0532 2640 >90 MON APR 24 18 56 19 50 20 24 00 08 03 45 04 20 05 13 10 29 14 06 17 51 7.4 3.6 49 0630 2643 >90 TUE APR 25 18 57 19 51 20 26 00 56 03 43 04 18 05 12 10 35 14 10 17 53 7.3 2.8 38 0722 2630 83 WED APR 26 18 58 19 52 20 27 01 37 03 42 04 17 05 11 10 40 14 14 17 56 7.2 2.1 28 0814 2434 75 THU APR 27 18 59 19 53 20 28 02 11 03 40 04 15 05 09 10 45 14 18 17 58 7.2 1.5 20 0904 2131 68 FRI APR 28 19 00 19 54 20 29 02 39 03 38 04 14 05 08 10 50 14 22 18 00 7.1 1.0 13 0951 1731 62 SAT APR 29 19 01 19 55 20 31 03 05 03 37 04 12 05 07 10 56 14 25 18 03 7.1 0.5 7 1037 1247 56 SUN APR 30 19 02 19 56 20 32 03 28 03 35 04 11 05 06 11 01 14 29 18 05 7.1 0.1 1 1122 0727 52 ONE LINE REFERS TO EVENING DATE FULL MOON Apr 06 04:36 UT AND FOLLOWING MORNING. LAST QUARTER Apr 13 09:11 UT All dates and times are zone PST NEW MOON Apr 20 04:13 UT in upper table (except sid time). FIRST QUARTER Apr 27 21:19 UT