KECK OBSERVATORY CALENDAR FOR 2003 -ASTRONOMICAL (computed for altitude 4145.0 m) ASTRONOMICAL(18 deg) TWILIGHT/DAWN MOON DATE(HST) SUN TWILIGHT ENDS MOON MOON DAWN BEGINS SUN SIDEREAL TIMES NIGHT (18 deg) RA DEC 2003 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 18 18 h h % midnight SAT FEB 01 18 24 19 03 19 29 07 59 19 01 05 42 06 08 06 47 03 55 08 27 14 10 10.2 10.2 100 2159-1734 SUN FEB 02 18 25 19 04 19 30 19 55 05 41 06 08 06 46 04 00 08 31 14 13 10.2 9.8 95 2248-1302 MON FEB 03 18 25 19 04 19 30 20 47 05 41 06 07 06 46 04 04 08 35 14 17 10.2 8.9 87 2334-0803 TUE FEB 04 18 26 19 05 19 31 21 37 05 41 06 07 06 46 04 09 08 39 14 21 10.2 8.1 79 0018-0250 WED FEB 05 18 26 19 05 19 31 22 26 05 41 06 07 06 45 04 13 08 43 14 25 10.2 7.3 71 0101+0223 THU FEB 06 18 27 19 06 19 32 23 14 05 40 06 06 06 45 04 18 08 47 14 28 10.1 6.4 63 0144+0729 FRI FEB 07 18 27 19 06 19 32 00 03 05 40 06 06 06 45 04 22 08 51 14 31 10.1 5.6 55 0228+1217 SAT FEB 08 18 28 19 06 19 32 00 53 05 40 06 06 06 44 04 26 08 54 14 35 10.1 4.8 47 0314+1640 SUN FEB 09 18 28 19 07 19 33 01 45 05 39 06 05 06 44 04 31 08 58 14 38 10.1 3.9 38 0402+2025 MON FEB 10 18 29 19 07 19 33 02 39 05 39 06 05 06 43 04 35 09 02 14 42 10.1 3.0 29 0453+2322 TUE FEB 11 18 29 19 08 19 34 03 35 05 39 06 04 06 43 04 40 09 06 14 46 10.1 2.1 20 0547+2516 WED FEB 12 18 30 19 08 19 34 04 31 05 38 06 04 06 42 04 44 09 10 14 49 10.1 1.1 11 0644+2555 THU FEB 13 18 30 19 09 19 35 05 26 05 38 06 03 06 42 04 48 09 14 14 53 10.0 0.2 1 0742+2507 FRI FEB 14 18 31 19 09 19 35 16 14 06 18 05 37 06 03 06 41 04 52 09 18 14 56 10.0 0.0 0 0841+2250 SAT FEB 15 18 31 19 10 19 35 17 17 07 06 05 37 06 02 06 41 04 56 09 22 15 00 10.0 0.0 0 0939+1908 SUN FEB 16 18 32 19 10 19 36 18 20 07 51 05 36 06 02 06 40 05 01 09 26 15 03 10.0 0.0 0 1035+1415 MON FEB 17 18 32 19 10 19 36 19 22 05 36 06 01 06 40 05 05 09 30 15 07 10.0 0.0 0 1129+0829 TUE FEB 18 18 33 19 11 19 36 20 23 05 35 06 01 06 39 05 09 09 34 15 10 10.0 0.8 7 1222+0214 WED FEB 19 18 33 19 11 19 37 21 24 05 35 06 00 06 38 05 14 09 38 15 14 10.0 1.8 17 1315-0408 THU FEB 20 18 33 19 11 19 37 22 24 05 34 06 00 06 38 05 18 09 42 15 17 9.9 2.8 27 1408-1015 FRI FEB 21 18 34 19 12 19 37 23 25 05 33 05 59 06 37 05 22 09 46 15 20 9.9 3.8 38 1502-1546 SAT FEB 22 18 34 19 12 19 38 00 27 05 33 05 59 06 36 05 27 09 50 15 24 9.9 4.8 48 1559-2020 SUN FEB 23 18 35 19 13 19 38 01 29 05 32 05 58 06 36 05 31 09 54 15 27 9.9 5.9 59 1657-2340 MON FEB 24 18 35 19 13 19 39 02 30 05 32 05 57 06 35 05 36 09 58 15 30 9.9 6.9 69 1756-2535 TUE FEB 25 18 35 19 13 19 39 03 29 05 31 05 57 06 34 05 40 10 01 15 33 9.9 7.8 79 1856-2557 WED FEB 26 18 36 19 14 19 39 04 23 05 30 05 56 06 34 05 44 10 05 15 36 9.9 8.7 88 1954-2450 THU FEB 27 18 36 19 14 19 40 05 11 05 30 05 55 06 33 05 49 10 09 15 40 9.8 9.5 96 2050-2223 FRI FEB 28 18 37 19 14 19 40 05 55 16 52 05 29 05 55 06 32 05 53 10 13 15 43 9.8 9.8 100 2143-1851 ONE LINE REFERS TO EVENING DATE NEW MOON FEB 01 10:51 UT AND FOLLOWING MORNING. FIRST QUARTER FEB 09 11:13 UT All dates and times are zone HST FULL MOON FEB 16 23:53 UT in upper table (except sid time). LAST QUARTER FEB 23 16:49 UT