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 FRI JAN 01 18 05 18 45 19 12 17 48 07 39 05 39 06 06 06 46 01 36 06 25 12 04 10.4 0.0 0 0710+1923 SAT JAN 02 18 05 18 46 19 13 18 48 05 39 06 06 06 46 01 41 06 28 12 08 10.4 0.0 0 0810+1805 SUN JAN 03 18 06 18 47 19 14 19 47 05 39 06 06 06 47 01 46 06 32 12 12 10.4 0.5 5 0907+1546 MON JAN 04 18 07 18 47 19 14 20 45 05 40 06 07 06 47 01 50 06 36 12 17 10.4 1.5 14 1001+1239 TUE JAN 05 18 07 18 48 19 15 21 40 05 40 06 07 06 47 01 55 06 40 12 21 10.4 2.4 23 1051+0900 WED JAN 06 18 08 18 48 19 15 22 32 05 40 06 07 06 47 01 58 06 44 12 25 10.4 3.3 31 1139+0504 THU JAN 07 18 09 18 49 19 16 23 22 05 41 06 07 06 48 02 03 06 48 12 30 10.4 4.1 39 1226+0101 FRI JAN 08 18 09 18 49 19 16 00 11 05 41 06 08 06 48 02 07 06 52 12 34 10.4 4.9 47 1311-0259 SAT JAN 09 18 10 18 50 19 17 00 59 05 41 06 08 06 48 02 12 06 56 12 38 10.4 5.7 54 1356-0650 SUN JAN 10 18 11 18 51 19 18 01 48 05 41 06 08 06 48 02 17 07 00 12 42 10.4 6.5 62 1442-1024 MON JAN 11 18 11 18 51 19 18 02 37 05 42 06 08 06 48 02 21 07 04 12 47 10.4 7.3 70 1529-1333 TUE JAN 12 18 12 18 52 19 19 03 26 05 42 06 09 06 49 02 26 07 08 12 51 10.4 8.1 78 1617-1611 WED JAN 13 18 12 18 52 19 19 04 17 05 42 06 09 06 49 02 30 07 12 12 55 10.4 9.0 86 1707-1808 THU JAN 14 18 13 18 53 19 20 05 09 16 05 05 42 06 09 06 49 02 35 07 16 12 59 10.4 9.8 94 1758-1917 FRI JAN 15 18 14 18 54 19 20 06 00 16 54 05 42 06 09 06 49 02 39 07 20 13 03 10.4 10.4 100 1852-1931 SAT JAN 16 18 14 18 54 19 21 06 50 17 47 05 42 06 09 06 49 02 44 07 24 13 07 10.3 10.3 100 1946-1846 SUN JAN 17 18 15 18 55 19 22 07 39 18 41 05 42 06 09 06 49 02 49 07 28 13 11 10.3 10.3 100 2040-1701 MON JAN 18 18 16 18 55 19 22 19 37 05 43 06 09 06 49 02 53 07 32 13 15 10.3 10.1 97 2134-1420 TUE JAN 19 18 16 18 56 19 23 20 34 05 43 06 09 06 49 02 58 07 35 13 19 10.3 9.1 88 2227-1051 WED JAN 20 18 17 18 57 19 23 21 31 05 43 06 09 06 49 03 02 07 39 13 23 10.3 8.2 79 2320-0646 THU JAN 21 18 18 18 57 19 24 22 28 05 43 06 09 06 49 03 07 07 43 13 27 10.3 7.2 70 0012-0216 FRI JAN 22 18 18 18 58 19 24 23 25 05 43 06 09 06 49 03 11 07 47 13 31 10.3 6.3 61 0105+0221 SAT JAN 23 18 19 18 58 19 25 00 23 05 43 06 09 06 49 03 16 07 51 13 35 10.3 5.3 51 0158+0655 SUN JAN 24 18 19 18 59 19 25 01 23 05 43 06 09 06 49 03 19 07 55 13 39 10.3 4.3 42 0253+1108 MON JAN 25 18 20 18 59 19 26 02 23 05 43 06 09 06 48 03 24 07 59 13 43 10.3 3.3 32 0349+1443 TUE JAN 26 18 21 19 00 19 26 03 24 05 43 06 09 06 48 03 28 08 03 13 47 10.3 2.3 22 0448+1727 WED JAN 27 18 21 19 00 19 27 04 25 05 42 06 09 06 48 03 33 08 07 13 50 10.2 1.3 12 0547+1905 THU JAN 28 18 22 19 01 19 27 05 24 05 42 06 09 06 48 03 37 08 11 13 54 10.2 0.3 2 0647+1932 FRI JAN 29 18 22 19 02 19 28 16 32 06 20 05 42 06 08 06 48 03 42 08 15 13 58 10.2 0.0 0 0746+1845 SAT JAN 30 18 23 19 02 19 28 17 31 07 11 05 42 06 08 06 47 03 46 08 19 14 02 10.2 0.0 0 0844+1651 SUN JAN 31 18 24 19 03 19 29 18 29 07 58 05 42 06 08 06 47 03 51 08 23 14 06 10.2 0.0 0 0939+1403 ONE LINE REFERS TO EVENING DATE FULL MOON JAN 02 02:54 UT AND FOLLOWING MORNING. LAST QUARTER JAN 09 14:25 UT All dates and times are zone HST NEW MOON JAN 17 15:49 UT in upper table (except sid time). FIRST QUARTER JAN 24 19:18 UT FULL MOON JAN 31 16:11 UT