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 MON MAY 01 18 56 19 35 20 03 04 52 16 54 04 34 05 02 05 42 09 55 14 21 19 23 9.4 9.3 98 0121+0312 TUE MAY 02 18 56 19 36 20 04 05 35 17 52 04 34 05 01 05 41 10 00 14 25 19 26 9.4 9.4 100 0214+0813 WED MAY 03 18 56 19 36 20 04 06 22 18 53 04 33 05 01 05 41 10 04 14 29 19 30 9.4 9.4 100 0310+1253 THU MAY 04 18 57 19 37 20 05 07 13 19 56 04 32 05 00 05 40 10 09 14 32 19 33 9.4 9.1 96 0408+1650 FRI MAY 05 18 57 19 37 20 05 21 00 04 31 04 59 05 40 10 13 14 36 19 36 9.4 8.0 85 0509+1944 SAT MAY 06 18 58 19 38 20 06 22 05 04 31 04 59 05 39 10 18 14 40 19 40 9.4 6.9 73 0612+2119 SUN MAY 07 18 58 19 38 20 06 23 07 04 30 04 58 05 39 10 22 14 44 19 43 9.3 5.8 62 0715+2127 MON MAY 08 18 58 19 39 20 07 00 05 04 29 04 58 05 38 10 27 14 48 19 47 9.3 4.9 52 0816+2010 TUE MAY 09 18 59 19 39 20 08 00 57 04 29 04 57 05 38 10 30 14 52 19 50 9.3 4.0 43 0915+1739 WED MAY 10 18 59 19 40 20 08 01 45 04 28 04 56 05 37 10 35 14 56 19 53 9.3 3.2 34 1010+1410 THU MAY 11 19 00 19 40 20 09 02 29 04 28 04 56 05 37 10 39 15 00 19 57 9.3 2.5 26 1103+1000 FRI MAY 12 19 00 19 41 20 09 03 09 04 27 04 55 05 36 10 44 15 04 20 00 9.2 1.8 19 1153+0525 SAT MAY 13 19 00 19 41 20 10 03 48 04 26 04 55 05 36 10 48 15 08 20 04 9.2 1.1 12 1242+0039 SUN MAY 14 19 01 19 42 20 10 04 26 04 26 04 54 05 35 10 53 15 12 20 07 9.2 0.5 5 1330-0402 MON MAY 15 19 01 19 42 20 11 16 46 05 05 04 25 04 54 05 35 10 57 15 16 20 11 9.2 0.0 0 1418-0830 TUE MAY 16 19 02 19 43 20 11 17 38 05 44 04 25 04 54 05 35 11 02 15 20 20 15 9.2 0.0 0 1506-1232 WED MAY 17 19 02 19 43 20 12 18 29 06 25 04 24 04 53 05 34 11 06 15 24 20 18 9.2 0.0 0 1554-1559 THU MAY 18 19 03 19 44 20 13 19 21 07 08 04 24 04 53 05 34 11 11 15 28 20 21 9.1 0.0 0 1644-1843 FRI MAY 19 19 03 19 44 20 13 20 12 07 53 04 23 04 52 05 34 11 15 15 32 20 24 9.1 0.5 5 1734-2035 SAT MAY 20 19 03 19 45 20 14 21 02 04 23 04 52 05 33 11 20 15 36 20 28 9.1 1.3 14 1825-2133 SUN MAY 21 19 04 19 45 20 14 21 51 04 22 04 52 05 33 11 24 15 39 20 32 9.1 2.1 23 1916-2132 MON MAY 22 19 04 19 46 20 15 22 38 04 22 04 51 05 33 11 29 15 43 20 35 9.1 2.9 31 2006-2034 TUE MAY 23 19 05 19 46 20 15 23 23 04 22 04 51 05 33 11 33 15 47 20 39 9.1 3.6 39 2056-1841 WED MAY 24 19 05 19 47 20 16 00 05 04 21 04 51 05 32 11 38 15 51 20 43 9.1 4.3 47 2145-1558 THU MAY 25 19 05 19 47 20 17 00 46 04 21 04 50 05 32 11 42 15 55 20 46 9.1 5.0 55 2234-1231 FRI MAY 26 19 06 19 48 20 17 01 25 04 21 04 50 05 32 11 46 15 59 20 50 9.0 5.6 62 2322-0827 SAT MAY 27 19 06 19 48 20 18 02 04 04 20 04 50 05 32 11 50 16 03 20 54 9.0 6.3 69 0011-0353 SUN MAY 28 19 07 19 49 20 18 02 44 04 20 04 50 05 32 11 55 16 07 20 58 9.0 6.9 76 0100+0100 MON MAY 29 19 07 19 49 20 19 03 26 04 20 04 49 05 31 11 59 16 11 21 01 9.0 7.6 84 0152+0601 TUE MAY 30 19 08 19 50 20 19 04 10 16 34 04 20 04 49 05 31 12 04 16 15 21 05 9.0 8.3 92 0246+1053 WED MAY 31 19 08 19 50 20 20 04 59 17 36 04 19 04 49 05 31 12 08 16 19 21 09 9.0 9.0 100 0343+1515 ONE LINE REFERS TO EVENING DATE NEW MOON MAY 04 04:14 UT AND FOLLOWING MORNING. FIRST QUARTER MAY 10 20:03 UT All dates and times are zone HST FULL MOON MAY 18 07:36 UT in upper table (except sid time). LAST QUARTER MAY 26 11:58 UT