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 TUE FEB 01 18 24 19 03 19 29 00 38 05 42 06 08 06 47 03 31 08 29 14 38 11.1 5.6 50 1452-1820 WED FEB 02 18 25 19 04 19 30 01 39 05 41 06 08 06 46 03 36 08 33 14 42 11.1 6.6 59 1547-2253 THU FEB 03 18 25 19 04 19 30 02 44 05 41 06 07 06 46 03 40 08 37 14 45 11.0 7.7 69 1648-2613 FRI FEB 04 18 26 19 05 19 31 03 51 05 41 06 07 06 46 03 45 08 41 14 49 11.0 8.8 79 1753-2755 SAT FEB 05 18 26 19 05 19 31 04 56 05 41 06 07 06 45 03 49 08 45 14 53 11.0 9.8 89 1900-2740 SUN FEB 06 18 27 19 06 19 32 05 57 16 22 05 40 06 06 06 45 03 54 08 49 14 56 11.0 10.8 98 2006-2522 MON FEB 07 18 27 19 06 19 32 06 50 17 32 05 40 06 06 06 45 03 58 08 53 15 00 11.0 11.0 100 2110-2117 TUE FEB 08 18 28 19 06 19 32 07 37 18 40 05 40 06 06 06 44 04 02 08 56 15 04 11.0 11.0 100 2209-1549 WED FEB 09 18 28 19 07 19 33 19 44 05 39 06 05 06 44 04 07 09 00 15 06 11.0 10.3 94 2304-0931 THU FEB 10 18 29 19 07 19 33 20 45 05 39 06 05 06 43 04 11 09 04 15 10 11.0 9.3 85 2356-0252 FRI FEB 11 18 29 19 08 19 34 21 43 05 39 06 04 06 43 04 16 09 08 15 13 10.9 8.3 76 0045+0342 SAT FEB 12 18 30 19 08 19 34 22 39 05 38 06 04 06 42 04 19 09 12 15 17 10.9 7.4 67 0134+0955 SUN FEB 13 18 30 19 09 19 35 23 34 05 38 06 03 06 42 04 24 09 16 15 20 10.9 6.5 59 0222+1529 MON FEB 14 18 31 19 09 19 35 00 30 05 37 06 03 06 41 04 28 09 20 15 24 10.9 5.6 50 0312+2014 TUE FEB 15 18 31 19 10 19 35 01 25 05 37 06 02 06 41 04 33 09 24 15 27 10.9 4.6 42 0402+2358 WED FEB 16 18 32 19 10 19 36 02 20 05 36 06 02 06 40 04 37 09 28 15 31 10.9 3.7 34 0455+2635 THU FEB 17 18 32 19 10 19 36 03 14 05 36 06 01 06 40 04 41 09 32 15 34 10.9 2.8 25 0548+2756 FRI FEB 18 18 33 19 11 19 36 04 06 05 35 06 01 06 39 04 46 09 36 15 38 10.8 1.9 17 0641+2801 SAT FEB 19 18 33 19 11 19 37 04 54 05 35 06 00 06 38 04 50 09 40 15 41 10.8 1.1 10 0734+2648 SUN FEB 20 18 33 19 11 19 37 05 37 05 34 06 00 06 38 04 54 09 44 15 45 10.8 0.4 3 0826+2422 MON FEB 21 18 34 19 12 19 37 16 25 06 17 05 33 05 59 06 37 04 59 09 48 15 48 10.8 0.0 0 0915+2053 TUE FEB 22 18 34 19 12 19 38 17 19 06 53 05 33 05 59 06 36 05 03 09 52 15 52 10.8 0.0 0 1003+1629 WED FEB 23 18 35 19 13 19 38 18 11 07 27 05 32 05 58 06 36 05 08 09 56 15 55 10.7 0.0 0 1048+1123 THU FEB 24 18 35 19 13 19 39 19 02 08 00 05 32 05 57 06 35 05 12 10 00 15 58 10.7 0.0 0 1133+0547 FRI FEB 25 18 35 19 13 19 39 19 53 05 31 05 57 06 34 05 16 10 04 16 02 10.7 0.7 6 1218-0006 SAT FEB 26 18 36 19 14 19 39 20 44 05 30 05 56 06 34 05 21 10 07 16 04 10.7 1.5 14 1303-0606 SUN FEB 27 18 36 19 14 19 40 21 37 05 30 05 55 06 33 05 25 10 11 16 07 10.7 2.4 22 1350-1156 MON FEB 28 18 37 19 14 19 40 22 33 05 29 05 55 06 32 05 29 10 15 16 11 10.7 3.3 31 1439-1722 ONE LINE REFERS TO EVENING DATE LAST QUARTER FEB 02 07:31 UT AND FOLLOWING MORNING. NEW MOON FEB 08 22:29 UT All dates and times are zone HST FIRST QUARTER FEB 16 00:18 UT in upper table (except sid time). FULL MOON FEB 24 04:58 UT