KECK OBSERVATORY CALENDAR FOR 2004 -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 2004 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 12 12 h h % midnight SUN FEB 01 18 24 19 03 19 29 04 28 05 42 06 08 06 47 03 28 08 26 14 35 11.1 1.7 15 0555+2649 MON FEB 02 18 25 19 04 19 30 05 20 05 41 06 08 06 46 03 33 08 30 14 39 11.1 0.8 7 0649+2703 TUE FEB 03 18 25 19 04 19 30 06 10 05 41 06 07 06 46 03 37 08 34 14 42 11.0 0.0 0 0744+2558 WED FEB 04 18 26 19 05 19 31 16 53 06 56 05 41 06 07 06 46 03 42 08 38 14 46 11.0 0.0 0 0838+2334 THU FEB 05 18 26 19 05 19 31 17 50 07 39 05 41 06 07 06 45 03 46 08 42 14 50 11.0 0.0 0 0930+1958 FRI FEB 06 18 27 19 06 19 32 18 47 05 40 06 06 06 45 03 51 08 46 14 53 11.0 0.0 0 1021+1522 SAT FEB 07 18 27 19 06 19 32 19 43 05 40 06 06 06 45 03 55 08 50 14 57 11.0 0.6 5 1110+0959 SUN FEB 08 18 28 19 06 19 32 20 39 05 40 06 06 06 44 03 59 08 54 15 01 11.0 1.5 14 1159+0404 MON FEB 09 18 28 19 07 19 33 21 34 05 39 06 05 06 44 04 04 08 57 15 03 11.0 2.5 22 1247-0206 TUE FEB 10 18 29 19 07 19 33 22 30 05 39 06 05 06 43 04 08 09 01 15 07 11.0 3.4 30 1336-0815 WED FEB 11 18 29 19 08 19 34 23 28 05 39 06 04 06 43 04 13 09 05 15 10 10.9 4.3 39 1428-1405 THU FEB 12 18 30 19 08 19 34 00 29 05 38 06 04 06 42 04 16 09 09 15 14 10.9 5.4 48 1522-1916 FRI FEB 13 18 30 19 09 19 35 01 32 05 38 06 03 06 42 04 21 09 13 15 17 10.9 6.4 58 1620-2325 SAT FEB 14 18 31 19 09 19 35 02 37 05 37 06 03 06 41 04 25 09 17 15 21 10.9 7.5 68 1722-2610 SUN FEB 15 18 31 19 10 19 35 03 42 05 37 06 02 06 41 04 30 09 21 15 24 10.9 8.5 78 1826-2713 MON FEB 16 18 32 19 10 19 36 04 43 05 36 06 02 06 40 04 34 09 25 15 28 10.9 9.6 87 1930-2626 TUE FEB 17 18 32 19 10 19 36 05 38 16 12 05 36 06 01 06 40 04 38 09 29 15 31 10.9 10.5 96 2032-2355 WED FEB 18 18 33 19 11 19 36 06 27 17 16 05 35 06 01 06 39 04 43 09 33 15 35 10.8 10.8 100 2130-1958 THU FEB 19 18 33 19 11 19 37 07 10 18 18 05 35 06 00 06 38 04 47 09 37 15 38 10.8 10.8 100 2225-1458 FRI FEB 20 18 33 19 11 19 37 07 48 19 16 05 34 06 00 06 38 04 51 09 41 15 42 10.8 10.7 99 2316-0919 SAT FEB 21 18 34 19 12 19 37 20 11 05 33 05 59 06 37 04 56 09 45 15 45 10.8 9.8 90 0004-0323 SUN FEB 22 18 34 19 12 19 38 21 04 05 33 05 59 06 36 05 00 09 49 15 49 10.8 8.9 82 0050+0232 MON FEB 23 18 35 19 13 19 38 21 56 05 32 05 58 06 36 05 05 09 53 15 52 10.7 8.0 74 0135+0813 TUE FEB 24 18 35 19 13 19 39 22 47 05 32 05 57 06 35 05 09 09 57 15 55 10.7 7.2 66 0220+1327 WED FEB 25 18 35 19 13 19 39 23 39 05 31 05 57 06 34 05 13 10 01 15 59 10.7 6.3 58 0307+1805 THU FEB 26 18 36 19 14 19 39 00 32 05 30 05 56 06 34 05 18 10 04 16 01 10.7 5.4 50 0355+2156 FRI FEB 27 18 36 19 14 19 40 01 25 05 30 05 55 06 33 05 22 10 08 16 04 10.7 4.5 42 0445+2451 SAT FEB 28 18 37 19 14 19 40 02 19 05 29 05 55 06 32 05 26 10 12 16 08 10.7 3.6 33 0537+2642 SUN FEB 29 18 37 19 15 19 40 03 11 05 28 05 54 06 32 05 31 10 16 16 11 10.7 2.7 25 0630+2720 ONE LINE REFERS TO EVENING DATE FULL MOON FEB 06 08:50 UT AND FOLLOWING MORNING. LAST QUARTER FEB 13 13:43 UT All dates and times are zone HST NEW MOON FEB 20 09:21 UT in upper table (except sid time). FIRST QUARTER FEB 28 03:26 UT