KECK OBSERVATORY CALENDAR FOR 2006 -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 2006 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 18 18 h h % midnight WED FEB 01 18 24 19 03 19 29 22 06 05 42 06 08 06 47 03 56 08 28 14 11 10.2 7.6 74 0029+0321 THU FEB 02 18 25 19 04 19 30 23 05 05 41 06 08 06 46 04 01 08 32 14 14 10.2 6.6 64 0119+0959 FRI FEB 03 18 25 19 04 19 30 00 04 05 41 06 07 06 46 04 05 08 36 14 18 10.2 5.6 55 0211+1558 SAT FEB 04 18 26 19 05 19 31 01 04 05 41 06 07 06 46 04 10 08 40 14 22 10.2 4.6 45 0303+2059 SUN FEB 05 18 26 19 05 19 31 02 03 05 41 06 07 06 45 04 14 08 44 14 26 10.2 3.6 35 0357+2451 MON FEB 06 18 27 19 06 19 32 03 02 05 40 06 06 06 45 04 19 08 48 14 29 10.1 2.6 25 0453+2723 TUE FEB 07 18 27 19 06 19 32 03 58 05 40 06 06 06 45 04 23 08 52 14 33 10.1 1.7 16 0549+2830 WED FEB 08 18 28 19 06 19 32 04 51 05 40 06 06 06 44 04 27 08 56 14 36 10.1 0.8 8 0645+2810 THU FEB 09 18 28 19 07 19 33 05 39 05 39 06 05 06 44 04 32 08 59 14 39 10.1 0.0 0 0739+2628 FRI FEB 10 18 29 19 07 19 33 16 19 06 21 05 39 06 05 06 43 04 36 09 03 14 43 10.1 0.0 0 0830+2335 SAT FEB 11 18 29 19 08 19 34 17 13 06 59 05 39 06 04 06 43 04 41 09 07 14 47 10.1 0.0 0 0918+1944 SUN FEB 12 18 30 19 08 19 34 18 05 07 34 05 38 06 04 06 42 04 45 09 11 14 50 10.1 0.0 0 1004+1507 MON FEB 13 18 30 19 09 19 35 18 55 05 38 06 03 06 42 04 50 09 15 14 54 10.0 0.0 0 1048+0957 TUE FEB 14 18 31 19 09 19 35 19 43 05 37 06 03 06 41 04 53 09 19 14 57 10.0 0.1 1 1130+0426 WED FEB 15 18 31 19 10 19 35 20 31 05 37 06 02 06 41 04 57 09 23 15 01 10.0 0.9 9 1212-0114 THU FEB 16 18 32 19 10 19 36 21 19 05 36 06 02 06 40 05 02 09 27 15 04 10.0 1.7 17 1254-0654 FRI FEB 17 18 32 19 10 19 36 22 08 05 36 06 01 06 40 05 06 09 31 15 08 10.0 2.5 25 1338-1224 SAT FEB 18 18 33 19 11 19 36 23 00 05 35 06 01 06 39 05 10 09 35 15 11 10.0 3.4 34 1424-1731 SUN FEB 19 18 33 19 11 19 37 23 54 05 35 06 00 06 38 05 15 09 39 15 15 10.0 4.3 42 1514-2201 MON FEB 20 18 33 19 11 19 37 00 53 05 34 06 00 06 38 05 19 09 43 15 18 9.9 5.3 52 1608-2536 TUE FEB 21 18 34 19 12 19 37 01 54 05 33 05 59 06 37 05 23 09 47 15 21 9.9 6.3 63 1707-2755 WED FEB 22 18 34 19 12 19 38 02 56 05 33 05 59 06 36 05 28 09 51 15 25 9.9 7.3 73 1809-2838 THU FEB 23 18 35 19 13 19 38 03 57 05 32 05 58 06 36 05 32 09 55 15 28 9.9 8.3 84 1913-2730 FRI FEB 24 18 35 19 13 19 39 04 53 05 32 05 57 06 35 05 37 09 59 15 32 9.9 9.2 93 2017-2428 SAT FEB 25 18 35 19 13 19 39 05 44 16 31 05 31 05 57 06 34 05 41 10 03 15 34 9.9 9.9 100 2119-1943 SUN FEB 26 18 36 19 14 19 39 06 30 17 39 05 30 05 56 06 34 05 45 10 07 15 37 9.9 9.9 100 2217-1340 MON FEB 27 18 36 19 14 19 40 07 12 18 44 05 30 05 55 06 33 05 50 10 10 15 41 9.8 9.8 100 2313-0646 TUE FEB 28 18 37 19 14 19 40 07 52 19 47 05 29 05 55 06 32 05 54 10 14 15 44 9.8 9.7 98 0006+0026 ONE LINE REFERS TO EVENING DATE FIRST QUARTER FEB 05 06:31 UT AND FOLLOWING MORNING. FULL MOON FEB 13 04:47 UT All dates and times are zone HST LAST QUARTER FEB 21 07:22 UT in upper table (except sid time). NEW MOON FEB 28 00:31 UT