KECK OBSERVATORY CALENDAR FOR 2000 -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 2000 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 18 18 h h % midnight SAT JAN 01 18 05 18 45 19 12 03 27 05 39 06 06 06 46 01 35 06 24 12 03 10.4 8.2 78 1536-1420 SUN JAN 02 18 05 18 46 19 13 04 17 05 39 06 06 06 46 01 40 06 28 12 07 10.4 9.1 86 1624-1710 MON JAN 03 18 06 18 47 19 14 05 07 16 06 05 39 06 06 06 47 01 45 06 31 12 11 10.4 9.9 94 1713-1916 TUE JAN 04 18 07 18 47 19 14 05 57 16 50 05 40 06 07 06 47 01 49 06 35 12 16 10.4 10.4 100 1803-2034 WED JAN 05 18 07 18 48 19 15 06 46 17 37 05 40 06 07 06 47 01 54 06 39 12 20 10.4 10.4 100 1854-2057 THU JAN 06 18 08 18 48 19 15 07 33 18 26 05 40 06 07 06 47 01 58 06 43 12 24 10.4 10.4 100 1945-2023 FRI JAN 07 18 09 18 49 19 16 19 17 05 41 06 07 06 48 02 02 06 47 12 29 10.4 10.4 99 2036-1854 SAT JAN 08 18 09 18 49 19 16 20 09 05 41 06 08 06 48 02 06 06 51 12 33 10.4 9.5 91 2126-1632 SUN JAN 09 18 10 18 50 19 17 21 01 05 41 06 08 06 48 02 11 06 55 12 37 10.4 8.7 83 2215-1323 MON JAN 10 18 11 18 51 19 18 21 53 05 41 06 08 06 48 02 16 06 59 12 41 10.4 7.8 75 2304-0936 TUE JAN 11 18 11 18 51 19 18 22 45 05 42 06 08 06 48 02 20 07 03 12 46 10.4 6.9 66 2353-0519 WED JAN 12 18 12 18 52 19 19 23 38 05 42 06 09 06 49 02 25 07 07 12 50 10.4 6.1 58 0042-0043 THU JAN 13 18 12 18 52 19 19 00 33 05 42 06 09 06 49 02 29 07 11 12 54 10.4 5.1 49 0132+0401 FRI JAN 14 18 13 18 53 19 20 01 30 05 42 06 09 06 49 02 34 07 15 12 58 10.4 4.2 40 0223+0842 SAT JAN 15 18 14 18 54 19 20 02 30 05 42 06 09 06 49 02 38 07 19 13 02 10.4 3.2 30 0318+1302 SUN JAN 16 18 14 18 54 19 21 03 33 05 42 06 09 06 49 02 43 07 23 13 06 10.3 2.1 20 0416+1644 MON JAN 17 18 15 18 55 19 22 04 37 05 42 06 09 06 49 02 48 07 27 13 10 10.3 1.1 10 0517+1925 TUE JAN 18 18 16 18 55 19 22 05 42 05 43 06 09 06 49 02 52 07 31 13 15 10.3 0.0 0 0621+2048 WED JAN 19 18 16 18 56 19 23 16 47 06 44 05 43 06 09 06 49 02 57 07 35 13 18 10.3 0.0 0 0725+2043 THU JAN 20 18 17 18 57 19 23 17 51 07 43 05 43 06 09 06 49 03 01 07 38 13 22 10.3 0.0 0 0829+1908 FRI JAN 21 18 18 18 57 19 24 18 56 05 43 06 09 06 49 03 06 07 42 13 26 10.3 0.0 0 0930+1618 SAT JAN 22 18 18 18 58 19 24 19 59 05 43 06 09 06 49 03 10 07 46 13 30 10.3 0.6 5 1027+1231 SUN JAN 23 18 19 18 58 19 25 20 59 05 43 06 09 06 49 03 15 07 50 13 34 10.3 1.6 15 1121+0808 MON JAN 24 18 19 18 59 19 25 21 55 05 43 06 09 06 48 03 18 07 54 13 38 10.3 2.5 24 1212+0329 TUE JAN 25 18 20 18 59 19 26 22 49 05 43 06 09 06 48 03 23 07 58 13 42 10.3 3.4 32 1301-0109 WED JAN 26 18 21 19 00 19 26 23 41 05 43 06 09 06 48 03 27 08 02 13 46 10.3 4.2 41 1349-0537 THU JAN 27 18 21 19 00 19 27 00 32 05 42 06 09 06 48 03 32 08 06 13 49 10.2 5.1 49 1436-0944 FRI JAN 28 18 22 19 01 19 27 01 22 05 42 06 09 06 48 03 36 08 10 13 53 10.2 5.9 57 1523-1322 SAT JAN 29 18 22 19 02 19 28 02 12 05 42 06 08 06 48 03 41 08 14 13 57 10.2 6.7 65 1610-1624 SUN JAN 30 18 23 19 02 19 28 03 02 05 42 06 08 06 47 03 45 08 18 14 01 10.2 7.6 73 1659-1844 MON JAN 31 18 24 19 03 19 29 03 51 05 42 06 08 06 47 03 50 08 22 14 05 10.2 8.4 81 1749-2016 ONE LINE REFERS TO EVENING DATE NEW MOON JAN 06 18:17 UT AND FOLLOWING MORNING. FIRST QUARTER JAN 14 13:37 UT All dates and times are zone HST FULL MOON JAN 21 04:43 UT in upper table (except sid time). LAST QUARTER JAN 28 07:59 UT