KECK OBSERVATORY CALENDAR FOR 2001 -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 2001 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 12 12 h h % midnight TUE MAY 01 18 55 19 35 20 03 02 48 04 35 05 03 05 42 09 54 14 20 19 23 9.5 2.3 23 1036+1324 WED MAY 02 18 56 19 35 20 03 03 32 04 34 05 02 05 42 09 58 14 24 19 26 9.4 1.5 15 1130+0824 THU MAY 03 18 56 19 36 20 04 04 14 04 34 05 01 05 41 10 03 14 28 19 29 9.4 0.8 8 1223+0258 FRI MAY 04 18 56 19 36 20 04 16 16 04 54 04 33 05 01 05 41 10 07 14 31 19 33 9.4 0.1 1 1315-0233 SAT MAY 05 18 57 19 37 20 05 17 13 05 36 04 32 05 00 05 40 10 12 14 35 19 36 9.4 0.0 0 1406-0755 SUN MAY 06 18 57 19 37 20 05 18 11 06 18 04 31 04 59 05 40 10 16 14 39 19 39 9.4 0.0 0 1458-1247 MON MAY 07 18 58 19 38 20 06 19 08 07 02 04 31 04 59 05 39 10 21 14 43 19 43 9.4 0.0 0 1551-1656 TUE MAY 08 18 58 19 38 20 06 20 05 07 49 04 30 04 58 05 39 10 25 14 47 19 46 9.3 0.5 4 1645-2009 WED MAY 09 18 58 19 39 20 07 21 01 04 29 04 58 05 38 10 29 14 51 19 50 9.3 1.4 14 1739-2216 THU MAY 10 18 59 19 39 20 08 21 55 04 29 04 57 05 38 10 33 14 55 19 53 9.3 2.3 24 1833-2315 FRI MAY 11 18 59 19 40 20 08 22 46 04 28 04 56 05 37 10 38 14 59 19 56 9.3 3.1 33 1926-2305 SAT MAY 12 19 00 19 40 20 09 23 34 04 28 04 56 05 37 10 42 15 03 20 00 9.3 3.9 42 2018-2151 SUN MAY 13 19 00 19 41 20 09 00 18 04 27 04 55 05 36 10 47 15 07 20 03 9.2 4.6 50 2108-1939 MON MAY 14 19 00 19 41 20 10 00 59 04 26 04 55 05 36 10 51 15 11 20 07 9.2 5.3 57 2156-1638 TUE MAY 15 19 01 19 42 20 10 01 37 04 26 04 54 05 35 10 56 15 15 20 10 9.2 5.9 64 2243-1256 WED MAY 16 19 01 19 42 20 11 02 14 04 25 04 54 05 35 11 00 15 19 20 14 9.2 6.5 71 2329-0841 THU MAY 17 19 02 19 43 20 11 02 49 04 25 04 54 05 35 11 05 15 23 20 18 9.2 7.1 77 0014-0402 FRI MAY 18 19 02 19 43 20 12 03 25 04 24 04 53 05 34 11 09 15 27 20 20 9.2 7.7 84 0100+0051 SAT MAY 19 19 03 19 44 20 13 04 02 16 14 04 24 04 53 05 34 11 14 15 31 20 24 9.1 8.3 90 0147+0551 SUN MAY 20 19 03 19 44 20 13 04 41 17 08 04 23 04 52 05 34 11 18 15 35 20 27 9.1 8.9 97 0236+1044 MON MAY 21 19 03 19 45 20 14 05 24 18 04 04 23 04 52 05 33 11 23 15 39 20 31 9.1 9.1 100 0328+1514 TUE MAY 22 19 04 19 45 20 14 06 11 19 03 04 22 04 52 05 33 11 27 15 42 20 35 9.1 9.1 100 0423+1901 WED MAY 23 19 04 19 46 20 15 07 04 20 05 04 22 04 51 05 33 11 32 15 46 20 38 9.1 8.8 96 0522+2147 THU MAY 24 19 05 19 46 20 15 21 07 04 22 04 51 05 33 11 36 15 50 20 42 9.1 7.7 85 0623+2313 FRI MAY 25 19 05 19 47 20 16 22 09 04 21 04 51 05 32 11 41 15 54 20 46 9.1 6.7 73 0726+2310 SAT MAY 26 19 05 19 47 20 17 23 06 04 21 04 50 05 32 11 45 15 58 20 49 9.1 5.7 63 0827+2135 SUN MAY 27 19 06 19 48 20 17 23 59 04 21 04 50 05 32 11 49 16 02 20 53 9.0 4.8 53 0927+1838 MON MAY 28 19 06 19 48 20 18 00 48 04 20 04 50 05 32 11 53 16 06 20 57 9.0 4.0 44 1024+1435 TUE MAY 29 19 07 19 49 20 18 01 32 04 20 04 50 05 32 11 58 16 10 21 01 9.0 3.3 36 1118+0945 WED MAY 30 19 07 19 49 20 19 02 13 04 20 04 49 05 31 12 02 16 14 21 04 9.0 2.6 28 1211+0427 THU MAY 31 19 08 19 50 20 19 02 53 04 20 04 49 05 31 12 07 16 18 21 08 9.0 1.9 21 1301-0059 ONE LINE REFERS TO EVENING DATE FULL MOON MAY 07 13:58 UT AND FOLLOWING MORNING. LAST QUARTER MAY 15 10:13 UT All dates and times are zone HST NEW MOON MAY 23 02:49 UT in upper table (except sid time). FIRST QUARTER MAY 29 22:12 UT