KECK OBSERVATORY CALENDAR FOR 2005 -NAUTICAL (computed for altitude 4145.0 m) NAUTICAL(12 deg) TWILIGHT/DAWN MOON DATE(HST) SUN TWILIGHT ENDS MOON MOON DAWN BEGINS SUN SIDEREAL TIMES NIGHT (12 deg) RA DEC 2005 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 12 12 h h % midnight FRI APR 01 18 46 19 24 19 50 01 36 05 02 05 28 06 05 07 45 12 22 17 50 10.1 6.2 61 1925-2718 SAT APR 02 18 46 19 24 19 50 02 31 05 01 05 27 06 05 07 49 12 25 17 53 10.1 7.1 70 2027-2427 SUN APR 03 18 46 19 24 19 50 03 20 05 00 05 26 06 04 07 53 12 29 17 56 10.0 7.9 79 2126-2006 MON APR 04 18 47 19 25 19 51 04 04 04 59 05 25 06 03 07 58 12 33 17 59 10.0 8.7 86 2221-1436 TUE APR 05 18 47 19 25 19 51 04 44 16 11 04 58 05 24 06 02 08 02 12 37 18 02 10.0 9.3 93 2314-0820 WED APR 06 18 47 19 25 19 52 05 21 17 10 04 57 05 23 06 01 08 05 12 41 18 05 10.0 9.9 99 0004-0143 THU APR 07 18 48 19 26 19 52 05 58 18 07 04 56 05 22 06 00 08 10 12 45 18 08 9.9 9.9 100 0053+0452 FRI APR 08 18 48 19 26 19 52 06 35 19 04 04 55 05 21 06 00 08 14 12 49 18 11 9.9 9.9 100 0142+1108 SAT APR 09 18 48 19 26 19 53 07 13 20 01 04 54 05 20 05 59 08 18 12 53 18 14 9.9 9.3 94 0232+1646 SUN APR 10 18 48 19 27 19 53 07 55 20 59 04 53 05 20 05 58 08 23 12 57 18 18 9.9 8.3 84 0324+2129 MON APR 11 18 49 19 27 19 53 21 57 04 52 05 19 05 57 08 27 13 01 18 21 9.9 7.4 74 0417+2505 TUE APR 12 18 49 19 27 19 54 22 54 04 51 05 18 05 56 08 31 13 05 18 24 9.8 6.4 64 0511+2724 WED APR 13 18 49 19 28 19 54 23 49 04 50 05 17 05 55 08 36 13 09 18 27 9.8 5.5 55 0606+2820 THU APR 14 18 50 19 28 19 55 00 41 04 50 05 16 05 55 08 40 13 13 18 30 9.8 4.6 46 0700+2755 FRI APR 15 18 50 19 28 19 55 01 28 04 49 05 15 05 54 08 44 13 17 18 33 9.8 3.8 38 0753+2613 SAT APR 16 18 50 19 29 19 56 02 11 04 48 05 14 05 53 08 49 13 21 18 36 9.7 3.0 31 0844+2322 SUN APR 17 18 51 19 29 19 56 02 49 04 47 05 14 05 52 08 53 13 25 18 39 9.7 2.4 24 0932+1932 MON APR 18 18 51 19 30 19 56 03 25 04 46 05 13 05 51 08 58 13 29 18 42 9.7 1.8 18 1019+1452 TUE APR 19 18 51 19 30 19 57 03 59 04 45 05 12 05 51 09 02 13 32 18 45 9.7 1.2 12 1104+0933 WED APR 20 18 51 19 30 19 57 04 31 04 44 05 11 05 50 09 06 13 36 18 48 9.7 0.7 6 1149+0345 THU APR 21 18 52 19 31 19 58 16 28 05 05 04 43 05 10 05 49 09 11 13 40 18 51 9.7 0.1 0 1234-0220 FRI APR 22 18 52 19 31 19 58 17 21 05 40 04 42 05 09 05 48 09 15 13 44 18 54 9.6 0.0 0 1321-0829 SAT APR 23 18 52 19 32 19 59 18 16 06 18 04 42 05 09 05 48 09 20 13 48 18 58 9.6 0.0 0 1410-1424 SUN APR 24 18 53 19 32 19 59 19 15 07 01 04 41 05 08 05 47 09 23 13 52 19 01 9.6 0.0 0 1503-1944 MON APR 25 18 53 19 32 20 00 20 17 07 51 04 40 05 07 05 46 09 27 13 56 19 04 9.6 0.8 7 1601-2406 TUE APR 26 18 53 19 33 20 00 21 22 04 39 05 06 05 46 09 32 14 00 19 07 9.6 1.8 19 1702-2704 WED APR 27 18 54 19 33 20 01 22 28 04 38 05 06 05 45 09 36 14 04 19 11 9.6 2.9 30 1806-2819 THU APR 28 18 54 19 34 20 01 23 30 04 37 05 05 05 44 09 41 14 08 19 14 9.5 3.9 41 1911-2740 FRI APR 29 18 55 19 34 20 02 00 28 04 37 05 04 05 44 09 45 14 12 19 17 9.5 4.9 51 2013-2513 SAT APR 30 18 55 19 35 20 02 01 18 04 36 05 03 05 43 09 50 14 16 19 20 9.5 5.7 60 2113-2113 ONE LINE REFERS TO EVENING DATE LAST QUARTER APR 02 00:53 UT AND FOLLOWING MORNING. NEW MOON APR 08 20:36 UT All dates and times are zone HST FIRST QUARTER APR 16 14:40 UT in upper table (except sid time). FULL MOON APR 24 10:09 UT