KECK OBSERVATORY CALENDAR FOR 2000 -NAUTICAL (computed for altitude 4145.0 m) NAUTICAL(12 deg) TWILIGHT/DAWN MOON DATE(HST) SUN TWILIGHT ENDS MOON MOON DAWN BEGINS SUN SIDEREAL TIMES NIGHT (12 deg) RA DEC 2000 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 12 12 h h % midnight TUE FEB 01 18 24 19 03 19 29 04 41 05 42 06 08 06 47 03 28 08 26 14 35 11.1 9.6 86 1839-2055 WED FEB 02 18 25 19 04 19 30 05 29 16 21 05 41 06 08 06 46 03 33 08 30 14 39 11.1 10.4 94 1930-2037 THU FEB 03 18 25 19 04 19 30 06 15 17 12 05 41 06 07 06 46 03 37 08 34 14 42 11.0 11.0 100 2022-1923 FRI FEB 04 18 26 19 05 19 31 07 00 18 03 05 41 06 07 06 46 03 42 08 38 14 46 11.0 11.0 100 2113-1713 SAT FEB 05 18 26 19 05 19 31 07 43 18 56 05 41 06 07 06 45 03 46 08 42 14 50 11.0 11.0 100 2203-1414 SUN FEB 06 18 27 19 06 19 32 19 49 05 40 06 06 06 45 03 51 08 46 14 53 11.0 10.3 93 2252-1033 MON FEB 07 18 27 19 06 19 32 20 42 05 40 06 06 06 45 03 55 08 49 14 56 11.0 9.4 85 2341-0620 TUE FEB 08 18 28 19 06 19 32 21 35 05 40 06 06 06 44 03 59 08 53 15 00 11.0 8.5 77 0030-0145 WED FEB 09 18 28 19 07 19 33 22 29 05 39 06 05 06 44 04 04 08 57 15 03 11.0 7.6 69 0120+0257 THU FEB 10 18 29 19 07 19 33 23 25 05 39 06 05 06 43 04 07 09 01 15 07 11.0 6.7 60 0211+0737 FRI FEB 11 18 29 19 08 19 34 00 22 05 39 06 04 06 43 04 12 09 05 15 10 10.9 5.7 52 0303+1158 SAT FEB 12 18 30 19 08 19 34 01 22 05 38 06 04 06 42 04 16 09 09 15 14 10.9 4.7 42 0359+1546 SUN FEB 13 18 30 19 09 19 35 02 23 05 38 06 03 06 42 04 21 09 13 15 17 10.9 3.7 33 0457+1841 MON FEB 14 18 31 19 09 19 35 03 26 05 37 06 03 06 41 04 25 09 17 15 21 10.9 2.6 24 0558+2030 TUE FEB 15 18 31 19 10 19 35 04 27 05 37 06 02 06 41 04 30 09 21 15 24 10.9 1.6 14 0700+2057 WED FEB 16 18 32 19 10 19 36 05 26 05 36 06 02 06 40 04 34 09 25 15 28 10.9 0.6 5 0802+2000 THU FEB 17 18 32 19 10 19 36 16 35 06 21 05 36 06 01 06 40 04 38 09 29 15 31 10.9 0.0 0 0903+1742 FRI FEB 18 18 33 19 11 19 36 17 38 07 11 05 35 06 01 06 39 04 43 09 33 15 35 10.8 0.0 0 1002+1418 SAT FEB 19 18 33 19 11 19 37 18 40 07 57 05 35 06 00 06 38 04 47 09 37 15 38 10.8 0.0 0 1058+1007 SUN FEB 20 18 33 19 11 19 37 19 39 05 34 06 00 06 38 04 51 09 41 15 42 10.8 0.5 4 1151+0528 MON FEB 21 18 34 19 12 19 37 20 35 05 33 05 59 06 37 04 56 09 45 15 45 10.8 1.4 12 1241+0041 TUE FEB 22 18 34 19 12 19 38 21 29 05 33 05 59 06 36 05 00 09 49 15 49 10.8 2.3 21 1330-0400 WED FEB 23 18 35 19 13 19 38 22 22 05 32 05 58 06 36 05 05 09 53 15 52 10.7 3.1 29 1419-0822 THU FEB 24 18 35 19 13 19 39 23 13 05 32 05 57 06 35 05 09 09 56 15 54 10.7 4.0 37 1506-1216 FRI FEB 25 18 35 19 13 19 39 00 04 05 31 05 57 06 34 05 13 10 00 15 58 10.7 4.8 45 1555-1534 SAT FEB 26 18 36 19 14 19 39 00 54 05 30 05 56 06 34 05 18 10 04 16 01 10.7 5.7 52 1643-1810 SUN FEB 27 18 36 19 14 19 40 01 44 05 30 05 55 06 33 05 22 10 08 16 04 10.7 6.5 60 1733-1958 MON FEB 28 18 37 19 14 19 40 02 34 05 29 05 55 06 32 05 25 10 12 16 08 10.7 7.3 68 1823-2053 TUE FEB 29 18 37 19 15 19 40 03 22 05 28 05 54 06 32 05 30 10 16 16 11 10.7 8.1 76 1914-2053 ONE LINE REFERS TO EVENING DATE NEW MOON FEB 05 13:07 UT AND FOLLOWING MORNING. FIRST QUARTER FEB 12 23:23 UT All dates and times are zone HST FULL MOON FEB 19 16:29 UT in upper table (except sid time). LAST QUARTER FEB 27 03:56 UT