KECK OBSERVATORY CALENDAR FOR 2001 -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 2001 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 18 18 h h % midnight TUE MAY 01 18 55 19 35 20 03 02 48 04 35 05 03 05 42 10 22 14 20 18 55 8.5 1.8 20 1036+1324 WED MAY 02 18 56 19 35 20 03 03 32 04 34 05 02 05 42 10 26 14 24 18 58 8.5 1.0 12 1130+0824 THU MAY 03 18 56 19 36 20 04 04 14 04 34 05 01 05 41 10 31 14 28 19 02 8.5 0.3 3 1223+0258 FRI MAY 04 18 56 19 36 20 04 16 16 04 54 04 33 05 01 05 41 10 35 14 31 19 05 8.5 0.0 0 1315-0233 SAT MAY 05 18 57 19 37 20 05 17 13 05 36 04 32 05 00 05 40 10 40 14 35 19 08 8.4 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 44 14 39 19 11 8.4 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 49 14 43 19 15 8.4 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 53 14 47 19 18 8.4 0.0 0 1645-2009 WED MAY 09 18 58 19 39 20 07 21 01 04 29 04 58 05 38 10 58 14 51 19 21 8.4 0.9 10 1739-2216 THU MAY 10 18 59 19 39 20 08 21 55 04 29 04 57 05 38 11 03 14 55 19 25 8.3 1.8 21 1833-2315 FRI MAY 11 18 59 19 40 20 08 22 46 04 28 04 56 05 37 11 06 14 59 19 28 8.3 2.6 31 1926-2305 SAT MAY 12 19 00 19 40 20 09 23 34 04 28 04 56 05 37 11 11 15 03 19 32 8.3 3.4 41 2018-2151 SUN MAY 13 19 00 19 41 20 09 00 18 04 27 04 55 05 36 11 15 15 07 19 35 8.3 4.2 50 2108-1939 MON MAY 14 19 00 19 41 20 10 00 59 04 26 04 55 05 36 11 20 15 11 19 38 8.3 4.8 58 2156-1638 TUE MAY 15 19 01 19 42 20 10 01 37 04 26 04 54 05 35 11 24 15 15 19 42 8.3 5.5 65 2243-1256 WED MAY 16 19 01 19 42 20 11 02 14 04 25 04 54 05 35 11 29 15 19 19 45 8.2 6.1 73 2329-0841 THU MAY 17 19 02 19 43 20 11 02 49 04 25 04 54 05 35 11 33 15 23 19 48 8.2 6.6 80 0014-0402 FRI MAY 18 19 02 19 43 20 12 03 25 04 24 04 53 05 34 11 38 15 27 19 51 8.2 7.2 88 0100+0051 SAT MAY 19 19 03 19 44 20 13 04 02 16 14 04 24 04 53 05 34 11 43 15 31 19 55 8.2 7.8 95 0147+0551 SUN MAY 20 19 03 19 44 20 13 04 41 17 08 04 23 04 52 05 34 11 47 15 35 19 58 8.2 8.2 100 0236+1044 MON MAY 21 19 03 19 45 20 14 05 24 18 04 04 23 04 52 05 33 11 52 15 39 20 02 8.1 8.1 100 0328+1514 TUE MAY 22 19 04 19 45 20 14 06 11 19 03 04 22 04 52 05 33 11 56 15 42 20 05 8.1 8.1 100 0423+1901 WED MAY 23 19 04 19 46 20 15 07 04 20 05 04 22 04 51 05 33 12 01 15 46 20 09 8.1 8.1 100 0522+2147 THU MAY 24 19 05 19 46 20 15 21 07 04 22 04 51 05 33 12 05 15 50 20 13 8.1 7.2 89 0623+2313 FRI MAY 25 19 05 19 47 20 16 22 09 04 21 04 51 05 32 12 10 15 54 20 16 8.1 6.2 76 0726+2310 SAT MAY 26 19 05 19 47 20 17 23 06 04 21 04 50 05 32 12 15 15 58 20 20 8.1 5.2 65 0827+2135 SUN MAY 27 19 06 19 48 20 17 23 59 04 21 04 50 05 32 12 19 16 02 20 24 8.1 4.4 54 0927+1838 MON MAY 28 19 06 19 48 20 18 00 48 04 20 04 50 05 32 12 24 16 06 20 27 8.0 3.5 43 1024+1435 TUE MAY 29 19 07 19 49 20 18 01 32 04 20 04 50 05 32 12 27 16 10 20 31 8.0 2.8 34 1118+0945 WED MAY 30 19 07 19 49 20 19 02 13 04 20 04 49 05 31 12 32 16 14 20 35 8.0 2.1 26 1211+0427 THU MAY 31 19 08 19 50 20 19 02 53 04 20 04 49 05 31 12 36 16 18 20 39 8.0 1.5 18 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