KECK OBSERVATORY CALENDAR FOR 1999 -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 1999 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 21 03 04 19 04 49 05 31 12 39 16 20 20 40 8.0 0.7 8 1912-2000 WED JUN 02 19 08 19 50 20 20 21 51 04 19 04 49 05 31 12 43 16 24 20 44 8.0 1.5 18 2004-1858 THU JUN 03 19 09 19 51 20 21 22 37 04 19 04 49 05 31 12 48 16 28 20 47 8.0 2.3 28 2055-1702 FRI JUN 04 19 09 19 51 20 21 23 22 04 19 04 49 05 31 12 52 16 32 20 51 8.0 3.0 37 2146-1415 SAT JUN 05 19 09 19 52 20 22 00 05 04 19 04 49 05 31 12 57 16 36 20 55 7.9 3.7 46 2237-1043 SUN JUN 06 19 10 19 52 20 22 00 48 04 19 04 49 05 31 13 01 16 40 20 59 7.9 4.4 55 2328-0635 MON JUN 07 19 10 19 53 20 23 01 30 04 19 04 49 05 31 13 06 16 44 21 03 7.9 5.1 64 0020-0159 TUE JUN 08 19 11 19 53 20 23 02 13 04 19 04 49 05 31 13 10 16 47 21 07 7.9 5.8 73 0113+0251 WED JUN 09 19 11 19 53 20 23 02 59 04 19 04 49 05 31 13 14 16 51 21 11 7.9 6.6 83 0208+0741 THU JUN 10 19 11 19 54 20 24 03 47 16 13 04 19 04 49 05 31 13 19 16 55 21 15 7.9 7.4 93 0306+1210 FRI JUN 11 19 12 19 54 20 24 04 40 17 18 04 19 04 49 05 31 13 23 16 59 21 19 7.9 7.9 100 0406+1556 SAT JUN 12 19 12 19 55 20 25 05 36 18 24 04 19 04 49 05 31 13 28 17 03 21 23 7.9 7.9 100 0508+1839 SUN JUN 13 19 12 19 55 20 25 06 37 19 29 04 19 04 49 05 31 13 32 17 07 21 27 7.9 7.9 100 0612+2002 MON JUN 14 19 13 19 55 20 25 07 39 20 32 04 19 04 49 05 31 13 36 17 11 21 31 7.9 7.8 98 0715+2000 TUE JUN 15 19 13 19 56 20 26 21 30 04 19 04 49 05 32 13 40 17 15 21 35 7.9 6.8 86 0817+1837 WED JUN 16 19 13 19 56 20 26 22 23 04 19 04 49 05 32 13 44 17 19 21 39 7.9 5.9 75 0915+1609 THU JUN 17 19 13 19 56 20 26 23 11 04 19 04 49 05 32 13 48 17 23 21 43 7.9 5.1 65 1009+1250 FRI JUN 18 19 14 19 56 20 27 23 54 04 19 04 49 05 32 13 53 17 27 21 47 7.9 4.4 56 1101+0900 SAT JUN 19 19 14 19 57 20 27 00 33 04 19 04 50 05 32 13 57 17 31 21 51 7.9 3.8 47 1149+0451 SUN JUN 20 19 14 19 57 20 27 01 11 04 20 04 50 05 32 14 01 17 35 21 55 7.9 3.2 39 1236+0037 MON JUN 21 19 14 19 57 20 27 01 48 04 20 04 50 05 33 14 05 17 39 21 59 7.9 2.5 32 1322-0333 TUE JUN 22 19 15 19 57 20 28 02 24 04 20 04 50 05 33 14 10 17 43 22 03 7.9 1.9 24 1407-0732 WED JUN 23 19 15 19 58 20 28 03 02 04 20 04 50 05 33 14 14 17 47 22 07 7.9 1.3 16 1453-1111 THU JUN 24 19 15 19 58 20 28 03 41 04 21 04 51 05 33 14 18 17 51 22 12 7.9 0.7 8 1540-1423 FRI JUN 25 19 15 19 58 20 28 16 30 04 23 04 21 04 51 05 34 14 22 17 54 22 16 7.9 0.0 0 1627-1659 SAT JUN 26 19 15 19 58 20 28 17 20 05 07 04 21 04 51 05 34 14 26 17 58 22 20 7.9 0.0 0 1717-1854 SUN JUN 27 19 16 19 58 20 28 18 10 05 53 04 21 04 52 05 34 14 30 18 02 22 24 7.9 0.0 0 1808-1959 MON JUN 28 19 16 19 58 20 28 19 00 06 43 04 22 04 52 05 34 14 34 18 06 22 29 7.9 0.0 0 1859-2010 TUE JUN 29 19 16 19 58 20 28 19 49 07 34 04 22 04 52 05 35 14 38 18 10 22 33 7.9 0.0 0 1951-1925 WED JUN 30 19 16 19 58 20 29 20 36 04 22 04 53 05 35 14 43 18 14 22 37 7.9 0.1 1 2043-1742 ONE LINE REFERS TO EVENING DATE LAST QUARTER JUN 07 04:24 UT AND FOLLOWING MORNING. NEW MOON JUN 13 19:05 UT All dates and times are zone HST FIRST QUARTER JUN 20 18:16 UT in upper table (except sid time). FULL MOON JUN 28 21:42 UT