KECK OBSERVATORY CALENDAR FOR 2001 -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 2001 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 18 18 h h % midnight FRI JUN 01 19 08 19 50 20 20 03 33 04 19 04 49 05 31 12 41 16 22 20 42 8.0 0.8 9 1352-0620 SAT JUN 02 19 08 19 50 20 20 16 02 04 14 04 19 04 49 05 31 12 45 16 26 20 46 8.0 0.1 1 1442-1119 SUN JUN 03 19 09 19 51 20 21 16 58 04 57 04 19 04 49 05 31 12 50 16 30 20 49 8.0 0.0 0 1534-1540 MON JUN 04 19 09 19 51 20 21 17 54 05 42 04 19 04 49 05 31 12 54 16 34 20 53 8.0 0.0 0 1627-1912 TUE JUN 05 19 09 19 52 20 22 18 50 06 29 04 19 04 49 05 31 12 59 16 38 20 57 7.9 0.0 0 1720-2143 WED JUN 06 19 10 19 52 20 22 19 45 07 19 04 19 04 49 05 31 13 03 16 42 21 01 7.9 0.0 0 1814-2307 THU JUN 07 19 10 19 53 20 23 20 38 04 19 04 49 05 31 13 08 16 46 21 05 7.9 0.2 3 1908-2321 FRI JUN 08 19 11 19 53 20 23 21 27 04 19 04 49 05 31 13 12 16 49 21 09 7.9 1.1 13 2001-2229 SAT JUN 09 19 11 19 53 20 23 22 13 04 19 04 49 05 31 13 16 16 53 21 13 7.9 1.8 23 2052-2035 SUN JUN 10 19 11 19 54 20 24 22 55 04 19 04 49 05 31 13 21 16 57 21 17 7.9 2.5 31 2141-1749 MON JUN 11 19 12 19 54 20 24 23 35 04 19 04 49 05 31 13 25 17 01 21 21 7.9 3.2 40 2228-1419 TUE JUN 12 19 12 19 55 20 25 00 11 04 19 04 49 05 31 13 30 17 05 21 25 7.9 3.8 47 2314-1016 WED JUN 13 19 12 19 55 20 25 00 47 04 19 04 49 05 31 13 34 17 09 21 29 7.9 4.4 55 2358-0547 THU JUN 14 19 13 19 55 20 25 01 22 04 19 04 49 05 31 13 38 17 13 21 33 7.9 5.0 62 0043-0100 FRI JUN 15 19 13 19 56 20 26 01 57 04 19 04 49 05 32 13 42 17 17 21 37 7.9 5.5 69 0129+0355 SAT JUN 16 19 13 19 56 20 26 02 35 04 19 04 49 05 32 13 46 17 21 21 41 7.9 6.2 78 0217+0849 SUN JUN 17 19 13 19 56 20 26 03 15 04 19 04 49 05 32 13 50 17 25 21 45 7.9 6.8 86 0307+1328 MON JUN 18 19 14 19 56 20 27 04 01 16 47 04 19 04 49 05 32 13 55 17 29 21 49 7.9 7.6 96 0401+1735 TUE JUN 19 19 14 19 57 20 27 04 51 17 48 04 19 04 50 05 32 13 59 17 33 21 53 7.9 7.9 100 0459+2050 WED JUN 20 19 14 19 57 20 27 05 48 18 51 04 20 04 50 05 32 14 03 17 37 21 58 7.9 7.9 100 0600+2252 THU JUN 21 19 14 19 57 20 27 06 50 19 55 04 20 04 50 05 33 14 07 17 41 22 01 7.9 7.9 100 0704+2323 FRI JUN 22 19 15 19 57 20 28 07 55 20 56 04 20 04 50 05 33 14 12 17 45 22 05 7.9 7.4 94 0808+2218 SAT JUN 23 19 15 19 58 20 28 21 53 04 20 04 50 05 33 14 16 17 49 22 09 7.9 6.5 81 0910+1941 SUN JUN 24 19 15 19 58 20 28 22 44 04 21 04 51 05 33 14 20 17 53 22 14 7.9 5.6 71 1009+1549 MON JUN 25 19 15 19 58 20 28 23 31 04 21 04 51 05 34 14 24 17 57 22 18 7.9 4.8 61 1105+1103 TUE JUN 26 19 15 19 58 20 28 00 14 04 21 04 51 05 34 14 28 18 00 22 22 7.9 4.1 52 1159+0546 WED JUN 27 19 16 19 58 20 28 00 54 04 21 04 52 05 34 14 32 18 04 22 26 7.9 3.4 43 1250+0017 THU JUN 28 19 16 19 58 20 28 01 34 04 22 04 52 05 34 14 36 18 08 22 31 7.9 2.8 35 1340-0505 FRI JUN 29 19 16 19 58 20 28 02 14 04 22 04 52 05 35 14 40 18 12 22 35 7.9 2.1 27 1430-1008 SAT JUN 30 19 16 19 58 20 29 02 55 04 22 04 53 05 35 14 45 18 16 22 39 7.9 1.5 18 1521-1437 ONE LINE REFERS TO EVENING DATE FULL MOON JUN 06 01:43 UT AND FOLLOWING MORNING. LAST QUARTER JUN 14 03:31 UT All dates and times are zone HST NEW MOON JUN 21 12:00 UT in upper table (except sid time). FIRST QUARTER JUN 28 03:23 UT