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 TUE JUN 01 19 08 19 50 20 20 17 39 05 21 04 19 04 49 05 31 12 42 16 23 20 43 8.0 0.0 0 1600-2234 WED JUN 02 19 09 19 51 20 21 18 49 06 19 04 19 04 49 05 31 12 47 16 27 20 47 8.0 0.0 0 1705-2600 THU JUN 03 19 09 19 51 20 21 19 59 07 25 04 19 04 49 05 31 12 51 16 31 20 51 8.0 0.0 0 1813-2731 FRI JUN 04 19 09 19 52 20 22 21 06 04 19 04 49 05 31 12 56 16 35 20 55 7.9 0.7 9 1921-2657 SAT JUN 05 19 10 19 52 20 22 22 06 04 19 04 49 05 31 13 00 16 39 20 58 7.9 1.7 21 2026-2430 SUN JUN 06 19 10 19 53 20 23 22 59 04 19 04 49 05 31 13 05 16 43 21 02 7.9 2.6 32 2125-2032 MON JUN 07 19 11 19 53 20 23 23 44 04 19 04 49 05 31 13 09 16 47 21 06 7.9 3.4 42 2220-1532 TUE JUN 08 19 11 19 53 20 23 00 23 04 19 04 49 05 31 13 13 16 51 21 10 7.9 4.0 50 2310-0955 WED JUN 09 19 11 19 54 20 24 00 59 04 19 04 49 05 31 13 18 16 55 21 14 7.9 4.6 57 2358-0402 THU JUN 10 19 12 19 54 20 24 01 32 04 19 04 49 05 31 13 22 16 58 21 18 7.9 5.1 64 0043+0149 FRI JUN 11 19 12 19 55 20 25 02 05 04 19 04 49 05 31 13 27 17 02 21 22 7.9 5.7 71 0127+0730 SAT JUN 12 19 12 19 55 20 25 02 39 04 19 04 49 05 31 13 31 17 06 21 26 7.9 6.2 78 0212+1248 SUN JUN 13 19 13 19 55 20 25 03 14 16 04 04 19 04 49 05 31 13 35 17 10 21 30 7.9 6.8 86 0258+1733 MON JUN 14 19 13 19 56 20 26 03 52 16 56 04 19 04 49 05 32 13 40 17 14 21 34 7.9 7.4 94 0346+2134 TUE JUN 15 19 13 19 56 20 26 04 34 17 49 04 19 04 49 05 32 13 44 17 18 21 38 7.9 7.9 100 0436+2440 WED JUN 16 19 13 19 56 20 26 05 19 18 43 04 19 04 49 05 32 13 48 17 22 21 42 7.9 7.9 100 0527+2642 THU JUN 17 19 14 19 56 20 27 06 09 19 36 04 19 04 49 05 32 13 52 17 26 21 46 7.9 7.9 100 0620+2731 FRI JUN 18 19 14 19 57 20 27 07 01 20 27 04 19 04 50 05 32 13 56 17 30 21 50 7.9 7.9 100 0714+2704 SAT JUN 19 19 14 19 57 20 27 07 56 21 14 04 20 04 50 05 32 14 00 17 34 21 55 7.9 7.1 90 0806+2522 SUN JUN 20 19 14 19 57 20 27 21 58 04 20 04 50 05 33 14 04 17 38 21 59 7.9 6.4 80 0857+2231 MON JUN 21 19 15 19 57 20 28 22 38 04 20 04 50 05 33 14 09 17 42 22 03 7.9 5.7 72 0947+1838 TUE JUN 22 19 15 19 58 20 28 23 15 04 20 04 50 05 33 14 13 17 46 22 06 7.9 5.1 64 1034+1356 WED JUN 23 19 15 19 58 20 28 23 51 04 21 04 51 05 33 14 17 17 50 22 11 7.9 4.5 57 1121+0834 THU JUN 24 19 15 19 58 20 28 00 25 04 21 04 51 05 34 14 21 17 54 22 15 7.9 3.9 49 1207+0243 FRI JUN 25 19 15 19 58 20 28 01 00 04 21 04 51 05 34 14 25 17 58 22 19 7.9 3.3 42 1254-0325 SAT JUN 26 19 16 19 58 20 28 01 37 04 21 04 52 05 34 14 29 18 02 22 23 7.9 2.7 34 1343-0935 SUN JUN 27 19 16 19 58 20 28 02 18 04 22 04 52 05 34 14 33 18 05 22 28 7.9 2.1 26 1436-1530 MON JUN 28 19 16 19 58 20 28 03 05 04 22 04 52 05 35 14 37 18 09 22 32 7.9 1.3 16 1533-2043 TUE JUN 29 19 16 19 58 20 29 16 25 04 00 04 22 04 53 05 35 14 42 18 13 22 36 7.9 0.4 4 1636-2444 WED JUN 30 19 16 19 58 20 29 17 34 05 02 04 23 04 53 05 35 14 46 18 17 22 41 7.9 0.0 0 1742-2705 ONE LINE REFERS TO EVENING DATE FULL MOON JUN 03 04:22 UT AND FOLLOWING MORNING. LAST QUARTER JUN 09 20:06 UT All dates and times are zone HST NEW MOON JUN 17 20:30 UT in upper table (except sid time). FIRST QUARTER JUN 25 19:11 UT