KECK OBSERVATORY CALENDAR FOR 1999 -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 1999 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 12 12 h h % midnight SAT MAY 01 18 55 19 35 20 03 19 48 07 43 04 35 05 03 05 42 09 52 14 18 19 21 9.5 0.2 2 1604-1550 SUN MAY 02 18 56 19 35 20 03 20 38 04 34 05 02 05 42 09 56 14 22 19 24 9.4 1.0 11 1652-1801 MON MAY 03 18 56 19 36 20 04 21 27 04 34 05 01 05 41 10 01 14 26 19 27 9.4 1.9 19 1742-1926 TUE MAY 04 18 56 19 36 20 04 22 17 04 33 05 01 05 41 10 05 14 29 19 31 9.4 2.7 28 1833-1959 WED MAY 05 18 57 19 37 20 05 23 05 04 32 05 00 05 40 10 10 14 33 19 34 9.4 3.5 36 1924-1938 THU MAY 06 18 57 19 37 20 05 23 53 04 31 04 59 05 40 10 14 14 37 19 37 9.4 4.3 45 2016-1821 FRI MAY 07 18 58 19 38 20 06 00 39 04 31 04 59 05 39 10 19 14 41 19 41 9.4 5.0 53 2108-1610 SAT MAY 08 18 58 19 38 20 06 01 24 04 30 04 58 05 39 10 23 14 45 19 44 9.3 5.8 61 2200-1307 SUN MAY 09 18 58 19 39 20 07 02 08 04 29 04 58 05 38 10 27 14 49 19 48 9.3 6.5 69 2252-0919 MON MAY 10 18 59 19 39 20 08 02 52 04 29 04 57 05 38 10 31 14 53 19 51 9.3 7.2 77 2345-0454 TUE MAY 11 18 59 19 40 20 08 03 36 04 28 04 56 05 37 10 36 14 57 19 54 9.3 7.9 85 0039-0003 WED MAY 12 19 00 19 40 20 09 04 22 16 27 04 28 04 56 05 37 10 40 15 01 19 58 9.3 8.7 93 0134+0456 THU MAY 13 19 00 19 41 20 09 05 10 17 29 04 27 04 55 05 36 10 45 15 05 20 01 9.2 9.2 100 0232+0945 FRI MAY 14 19 00 19 41 20 10 06 02 18 34 04 26 04 55 05 36 10 49 15 09 20 05 9.2 9.2 100 0332+1359 SAT MAY 15 19 01 19 42 20 10 06 57 19 40 04 26 04 54 05 35 10 54 15 13 20 08 9.2 9.2 100 0434+1718 SUN MAY 16 19 01 19 42 20 11 07 56 20 46 04 25 04 54 05 35 10 58 15 17 20 12 9.2 8.1 88 0537+1922 MON MAY 17 19 02 19 43 20 11 21 50 04 25 04 54 05 35 11 03 15 21 20 16 9.2 7.1 76 0640+2004 TUE MAY 18 19 02 19 43 20 12 22 49 04 24 04 53 05 34 11 07 15 25 20 18 9.2 6.1 66 0741+1926 WED MAY 19 19 03 19 44 20 13 23 43 04 24 04 53 05 34 11 12 15 29 20 22 9.1 5.2 56 0839+1737 THU MAY 20 19 03 19 44 20 13 00 31 04 23 04 52 05 34 11 16 15 33 20 25 9.1 4.4 47 0934+1452 FRI MAY 21 19 03 19 45 20 14 01 15 04 23 04 52 05 33 11 21 15 36 20 29 9.1 3.6 39 1026+1126 SAT MAY 22 19 04 19 45 20 14 01 56 04 22 04 52 05 33 11 25 15 40 20 33 9.1 2.9 32 1115+0734 SUN MAY 23 19 04 19 46 20 15 02 34 04 22 04 51 05 33 11 30 15 44 20 36 9.1 2.3 25 1202+0328 MON MAY 24 19 05 19 46 20 15 03 11 04 22 04 51 05 33 11 34 15 48 20 40 9.1 1.7 18 1248-0042 TUE MAY 25 19 05 19 47 20 16 03 47 04 21 04 51 05 32 11 39 15 52 20 44 9.1 1.1 11 1333-0447 WED MAY 26 19 05 19 47 20 17 16 07 04 24 04 21 04 50 05 32 11 43 15 56 20 47 9.1 0.4 4 1419-0839 THU MAY 27 19 06 19 48 20 17 16 55 05 02 04 21 04 50 05 32 11 47 16 00 20 51 9.0 0.0 0 1505-1210 FRI MAY 28 19 06 19 48 20 18 17 44 05 42 04 20 04 50 05 32 11 51 16 04 20 55 9.0 0.0 0 1552-1511 SAT MAY 29 19 07 19 49 20 18 18 34 06 24 04 20 04 50 05 32 11 56 16 08 20 59 9.0 0.0 0 1640-1736 SUN MAY 30 19 07 19 49 20 19 19 24 07 09 04 20 04 49 05 31 12 00 16 12 21 02 9.0 0.0 0 1730-1916 MON MAY 31 19 08 19 50 20 19 20 14 07 57 04 20 04 49 05 31 12 05 16 16 21 06 9.0 0.4 4 1820-2005 ONE LINE REFERS TO EVENING DATE LAST QUARTER MAY 08 17:33 UT AND FOLLOWING MORNING. NEW MOON MAY 15 12:07 UT All dates and times are zone HST FIRST QUARTER MAY 22 05:36 UT in upper table (except sid time). FULL MOON MAY 30 06:44 UT