KECK OBSERVATORY CALENDAR FOR 2012 -NAUTICAL (computed for altitude 4160.0 m) NAUTICAL(12 deg) TWILIGHT/DAWN MOON(midnight) DATE(HST) SUN TWILIGHT ENDS MOON MOON DAWN BEGINS SUN SIDEREAL TIMES NIGHT (12 deg) Zenith 2012 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ RA DEC Dist 12 18 18 12 12 12 h h % h m d m deg SUN APR 01 18 46 19 24 19 50 03 10 05 01 05 27 06 05 07 46 12 23 17 51 10.1 2.3 22 0857 1154 50 MON APR 02 18 47 19 24 19 51 14 44 03 53 05 00 05 26 06 04 07 50 12 27 17 54 10.0 1.6 15 0950 0717 40 TUE APR 03 18 47 19 25 19 51 15 42 04 36 04 59 05 25 06 03 07 55 12 31 17 56 10.0 0.8 8 1044 0205 32 WED APR 04 18 47 19 25 19 51 16 42 05 20 04 58 05 24 06 02 07 59 12 35 17 59 10.0 0.1 0 1139-0325 27 THU APR 05 18 47 19 25 19 52 17 44 06 06 04 57 05 23 06 01 08 03 12 38 18 02 10.0 0.0 0 1236-0851 29 FRI APR 06 18 48 19 26 19 52 18 48 06 56 04 56 05 22 06 00 08 08 12 42 18 05 9.9 0.0 0 1335-1350 36 SAT APR 07 18 48 19 26 19 52 19 53 04 55 05 21 06 00 08 12 12 46 18 08 9.9 0.5 4 1436-1756 46 SUN APR 08 18 48 19 26 19 53 20 59 04 54 05 20 05 59 08 16 12 50 18 11 9.9 1.6 15 1540-2047 58 MON APR 09 18 48 19 27 19 53 22 03 04 53 05 20 05 58 08 20 12 54 18 15 9.9 2.6 26 1643-2210 70 TUE APR 10 18 49 19 27 19 53 23 04 04 52 05 19 05 57 08 24 12 58 18 18 9.9 3.6 36 1745-2158 82 WED APR 11 18 49 19 27 19 54 00 00 04 51 05 18 05 56 08 28 13 02 18 21 9.8 4.5 46 1846-2031 >90 THU APR 12 18 49 19 28 19 54 00 50 04 50 05 17 05 55 08 33 13 06 18 24 9.8 5.4 54 1942-1754 >90 FRI APR 13 18 50 19 28 19 55 01 35 04 50 05 16 05 55 08 37 13 10 18 27 9.8 6.1 62 2035-1427 >90 SAT APR 14 18 50 19 29 19 55 02 16 04 49 05 15 05 54 08 42 13 14 18 30 9.8 6.8 69 2125-1027 >90 SUN APR 15 18 50 19 29 19 56 02 55 14 33 04 48 05 14 05 53 08 46 13 18 18 33 9.7 7.4 76 2212-0606 >90 MON APR 16 18 51 19 29 19 56 03 31 15 24 04 47 05 14 05 52 08 50 13 22 18 37 9.7 8.0 82 2258-0136 >90 TUE APR 17 18 51 19 30 19 56 04 07 16 14 04 46 05 13 05 51 08 55 13 26 18 40 9.7 8.6 88 2343 0252 >90 WED APR 18 18 51 19 30 19 57 04 43 17 03 04 45 05 12 05 51 08 59 13 30 18 43 9.7 9.2 95 0027 0709 >90 THU APR 19 18 52 19 30 19 57 05 19 17 53 04 44 05 11 05 50 09 03 13 34 18 45 9.7 9.7 100 0113 1106 >90 FRI APR 20 18 52 19 31 19 58 05 58 18 43 04 43 05 10 05 49 09 08 13 38 18 48 9.7 9.7 100 0158 1435 >90 SAT APR 21 18 52 19 31 19 58 06 39 19 33 04 42 05 09 05 49 09 12 13 42 18 51 9.6 9.6 99 0246 1727 >90 SUN APR 22 18 53 19 32 19 59 20 23 04 42 05 09 05 48 09 17 13 45 18 55 9.6 8.8 91 0334 1934 >90 MON APR 23 18 53 19 32 19 59 21 14 04 41 05 08 05 47 09 21 13 49 18 58 9.6 7.9 82 0424 2052 >90 TUE APR 24 18 53 19 32 20 00 22 04 04 40 05 07 05 46 09 25 13 53 19 01 9.6 7.0 73 0515 2113 >90 WED APR 25 18 54 19 33 20 00 22 52 04 39 05 06 05 46 09 30 13 57 19 04 9.6 6.2 65 0606 2036 >90 THU APR 26 18 54 19 33 20 01 23 38 04 38 05 06 05 45 09 34 14 01 19 08 9.6 5.5 57 0657 1900 >90 FRI APR 27 18 54 19 34 20 01 00 22 04 37 05 05 05 44 09 38 14 05 19 11 9.5 4.7 49 0749 1620 88 SAT APR 28 18 55 19 34 20 02 01 04 04 37 05 04 05 44 09 42 14 09 19 14 9.5 4.0 42 0839 1300 79 SUN APR 29 18 55 19 35 20 02 01 45 04 36 05 03 05 43 09 47 14 13 19 17 9.5 3.3 34 0930 0850 69 MON APR 30 18 55 19 35 20 03 02 27 04 35 05 03 05 42 09 51 14 17 19 21 9.5 2.6 27 1021 0402 59 ONE LINE REFERS TO EVENING DATE FULL MOON Apr 06 19:18 UT AND FOLLOWING MORNING. LAST QUARTER Apr 13 10:50 UT All dates and times are zone HST NEW MOON Apr 21 07:17 UT in upper table (except sid time). FIRST QUARTER Apr 29 09:59 UT