KECK OBSERVATORY CALENDAR FOR 2004 -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 2004 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 18 18 h h % midnight THU JAN 01 18 05 18 45 19 12 03 04 05 39 06 06 06 46 01 35 06 24 12 04 10.4 2.6 24 0251+1604 FRI JAN 02 18 05 18 46 19 13 03 56 05 39 06 06 06 46 01 40 06 28 12 08 10.4 1.7 16 0338+2010 SAT JAN 03 18 06 18 47 19 14 04 49 05 39 06 06 06 47 01 45 06 32 12 12 10.4 0.8 8 0427+2328 SUN JAN 04 18 07 18 47 19 14 05 42 05 40 06 07 06 47 01 49 06 36 12 16 10.4 0.0 0 0518+2546 MON JAN 05 18 07 18 48 19 15 16 20 06 36 05 40 06 07 06 47 01 54 06 39 12 20 10.4 0.0 0 0611+2655 TUE JAN 06 18 08 18 48 19 15 17 11 07 27 05 40 06 07 06 47 01 58 06 43 12 24 10.4 0.0 0 0706+2647 WED JAN 07 18 09 18 49 19 16 18 05 05 41 06 07 06 48 02 03 06 47 12 29 10.4 0.0 0 0800+2521 THU JAN 08 18 09 18 49 19 16 19 02 05 41 06 08 06 48 02 07 06 51 12 33 10.4 0.0 0 0853+2240 FRI JAN 09 18 10 18 50 19 17 19 58 05 41 06 08 06 48 02 11 06 55 12 37 10.4 0.7 6 0945+1852 SAT JAN 10 18 11 18 51 19 18 20 54 05 41 06 08 06 48 02 16 06 59 12 41 10.4 1.6 15 1034+1410 SUN JAN 11 18 11 18 51 19 18 21 49 05 42 06 08 06 48 02 20 07 03 12 46 10.4 2.5 24 1123+0845 MON JAN 12 18 12 18 52 19 19 22 43 05 42 06 09 06 49 02 25 07 07 12 50 10.4 3.4 32 1210+0252 TUE JAN 13 18 12 18 52 19 19 23 38 05 42 06 09 06 49 02 29 07 11 12 54 10.4 4.3 41 1258-0315 WED JAN 14 18 13 18 53 19 20 00 35 05 42 06 09 06 49 02 34 07 15 12 58 10.4 5.2 50 1348-0921 THU JAN 15 18 14 18 54 19 20 01 34 05 42 06 09 06 49 02 38 07 19 13 02 10.4 6.2 60 1440-1508 FRI JAN 16 18 14 18 54 19 21 02 37 05 42 06 09 06 49 02 43 07 23 13 06 10.3 7.3 70 1537-2012 SAT JAN 17 18 15 18 55 19 22 03 43 05 42 06 09 06 49 02 48 07 27 13 10 10.3 8.3 80 1637-2408 SUN JAN 18 18 16 18 55 19 22 04 50 05 43 06 09 06 49 02 52 07 31 13 15 10.3 9.5 91 1742-2630 MON JAN 19 18 16 18 56 19 23 05 56 16 17 05 43 06 09 06 49 02 57 07 35 13 19 10.3 10.3 100 1848-2701 TUE JAN 20 18 17 18 57 19 23 06 56 17 23 05 43 06 09 06 49 03 01 07 39 13 23 10.3 10.3 100 1954-2536 WED JAN 21 18 18 18 57 19 24 07 50 18 30 05 43 06 09 06 49 03 06 07 43 13 26 10.3 10.3 100 2056-2228 THU JAN 22 18 18 18 58 19 24 19 35 05 43 06 09 06 49 03 10 07 46 13 30 10.3 10.1 98 2153-1803 FRI JAN 23 18 19 18 58 19 25 20 35 05 43 06 09 06 49 03 15 07 50 13 34 10.3 9.1 88 2247-1246 SAT JAN 24 18 19 18 59 19 25 21 32 05 43 06 09 06 48 03 19 07 54 13 38 10.3 8.2 79 2336-0703 SUN JAN 25 18 20 18 59 19 26 22 25 05 43 06 09 06 48 03 24 07 58 13 42 10.3 7.3 70 0022-0112 MON JAN 26 18 21 19 00 19 26 23 16 05 43 06 09 06 48 03 28 08 02 13 46 10.3 6.5 62 0107+0431 TUE JAN 27 18 21 19 00 19 27 00 07 05 42 06 09 06 48 03 32 08 06 13 49 10.2 5.6 54 0152+0956 WED JAN 28 18 22 19 01 19 27 00 57 05 42 06 09 06 48 03 36 08 10 13 53 10.2 4.7 46 0237+1453 THU JAN 29 18 22 19 02 19 28 01 49 05 42 06 08 06 48 03 41 08 14 13 57 10.2 3.9 37 0323+1913 FRI JAN 30 18 23 19 02 19 28 02 41 05 42 06 08 06 47 03 45 08 18 14 01 10.2 3.0 29 0412+2245 SAT JAN 31 18 24 19 03 19 29 03 34 05 42 06 08 06 47 03 50 08 22 14 05 10.2 2.1 20 0502+2521 ONE LINE REFERS TO EVENING DATE FULL MOON JAN 07 15:44 UT AND FOLLOWING MORNING. LAST QUARTER JAN 15 04:49 UT All dates and times are zone HST NEW MOON JAN 21 21:07 UT in upper table (except sid time). FIRST QUARTER JAN 29 06:06 UT