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 WED JAN 01 18 05 18 45 19 12 06 48 17 17 05 39 06 06 06 46 01 36 06 25 12 05 10.4 10.4 100 1831-2544 THU JAN 02 18 05 18 46 19 13 07 46 18 17 05 39 06 06 06 46 01 41 06 29 12 09 10.4 10.4 100 1933-2516 FRI JAN 03 18 06 18 47 19 14 19 18 05 39 06 06 06 47 01 46 06 33 12 12 10.4 10.4 99 2031-2319 SAT JAN 04 18 07 18 47 19 14 20 17 05 40 06 07 06 47 01 50 06 36 12 17 10.4 9.4 89 2126-2008 SUN JAN 05 18 07 18 48 19 15 21 13 05 40 06 07 06 47 01 55 06 40 12 21 10.4 8.4 81 2218-1604 MON JAN 06 18 08 18 48 19 15 22 07 05 40 06 07 06 47 01 59 06 44 12 25 10.4 7.5 72 2305-1123 TUE JAN 07 18 09 18 49 19 16 22 57 05 41 06 07 06 48 02 04 06 48 12 30 10.4 6.7 64 2350-0622 WED JAN 08 18 09 18 49 19 16 23 46 05 41 06 08 06 48 02 07 06 52 12 34 10.4 5.9 56 0034-0112 THU JAN 09 18 10 18 50 19 17 00 34 05 41 06 08 06 48 02 12 06 56 12 38 10.4 5.1 49 0116+0356 FRI JAN 10 18 11 18 51 19 18 01 22 05 41 06 08 06 48 02 17 07 00 12 42 10.4 4.3 41 0200+0856 SAT JAN 11 18 11 18 51 19 18 02 11 05 42 06 08 06 48 02 21 07 04 12 47 10.4 3.5 33 0244+1337 SUN JAN 12 18 12 18 52 19 19 03 03 05 42 06 09 06 49 02 26 07 08 12 51 10.4 2.6 25 0331+1751 MON JAN 13 18 12 18 52 19 19 03 56 05 42 06 09 06 49 02 30 07 12 12 55 10.4 1.8 17 0420+2124 TUE JAN 14 18 13 18 53 19 20 04 52 05 42 06 09 06 49 02 35 07 16 12 59 10.4 0.8 8 0513+2403 WED JAN 15 18 14 18 54 19 20 05 49 05 42 06 09 06 49 02 39 07 20 13 03 10.4 0.0 0 0609+2532 THU JAN 16 18 14 18 54 19 21 16 32 06 45 05 42 06 09 06 49 02 44 07 24 13 07 10.3 0.0 0 0707+2539 FRI JAN 17 18 15 18 55 19 22 17 30 07 39 05 42 06 09 06 49 02 49 07 28 13 11 10.3 0.0 0 0806+2419 SAT JAN 18 18 16 18 55 19 22 18 31 05 43 06 09 06 49 02 53 07 32 13 16 10.3 0.0 0 0904+2132 SUN JAN 19 18 16 18 56 19 23 19 33 05 43 06 09 06 49 02 58 07 36 13 20 10.3 0.2 1 1000+1728 MON JAN 20 18 17 18 57 19 23 20 35 05 43 06 09 06 49 03 02 07 40 13 23 10.3 1.2 11 1054+1225 TUE JAN 21 18 18 18 57 19 24 21 34 05 43 06 09 06 49 03 07 07 43 13 27 10.3 2.2 21 1147+0640 WED JAN 22 18 18 18 58 19 24 22 33 05 43 06 09 06 49 03 11 07 47 13 31 10.3 3.1 30 1238+0034 THU JAN 23 18 19 18 58 19 25 23 32 05 43 06 09 06 49 03 16 07 51 13 35 10.3 4.1 39 1329-0534 FRI JAN 24 18 19 18 59 19 25 00 30 05 43 06 09 06 48 03 20 07 55 13 39 10.3 5.1 49 1421-1124 SAT JAN 25 18 20 18 59 19 26 01 31 05 43 06 09 06 48 03 25 07 59 13 43 10.3 6.1 59 1515-1638 SUN JAN 26 18 21 19 00 19 26 02 32 05 43 06 09 06 48 03 28 08 03 13 47 10.3 7.1 69 1612-2056 MON JAN 27 18 21 19 00 19 27 03 35 05 42 06 09 06 48 03 33 08 07 13 50 10.2 8.1 79 1710-2400 TUE JAN 28 18 22 19 01 19 27 04 36 05 42 06 09 06 48 03 37 08 11 13 54 10.2 9.1 89 1811-2536 WED JAN 29 18 22 19 02 19 28 05 34 16 04 05 42 06 08 06 48 03 42 08 15 13 58 10.2 10.1 98 1911-2539 THU JAN 30 18 23 19 02 19 28 06 28 17 04 05 42 06 08 06 47 03 46 08 19 14 02 10.2 10.2 100 2010-2410 FRI JAN 31 18 24 19 03 19 29 07 16 18 03 05 42 06 08 06 47 03 51 08 23 14 06 10.2 10.2 100 2106-2123 ONE LINE REFERS TO EVENING DATE NEW MOON JAN 02 20:26 UT AND FOLLOWING MORNING. FIRST QUARTER JAN 10 13:18 UT All dates and times are zone HST FULL MOON JAN 18 10:50 UT in upper table (except sid time). LAST QUARTER JAN 25 08:36 UT