KECK OBSERVATORY CALENDAR FOR 2006 -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 2006 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 18 18 h h % midnight FRI SEP 01 18 48 19 26 19 52 00 52 04 52 05 18 05 56 18 15 22 24 03 17 9.0 4.0 44 1753-2842 SAT SEP 02 18 47 19 25 19 52 01 54 04 52 05 18 05 57 18 19 22 28 03 21 9.0 3.0 32 1854-2755 SUN SEP 03 18 46 19 24 19 51 02 59 04 52 05 19 05 57 18 22 22 32 03 24 9.0 1.9 20 1956-2521 MON SEP 04 18 45 19 23 19 50 16 24 04 05 04 53 05 19 05 57 18 25 22 36 03 29 9.0 0.8 8 2057-2106 TUE SEP 05 18 44 19 22 19 49 17 13 05 11 04 53 05 19 05 57 18 28 22 40 03 33 9.1 0.0 0 2155-1527 WED SEP 06 18 43 19 21 19 48 17 57 06 15 04 53 05 19 05 57 18 31 22 43 03 37 9.1 0.0 0 2250-0847 THU SEP 07 18 42 19 21 19 47 18 39 07 18 04 54 05 20 05 58 18 34 22 47 03 42 9.1 0.0 0 2345-0135 FRI SEP 08 18 42 19 20 19 46 19 19 04 54 05 20 05 58 18 37 22 51 03 46 9.1 0.0 0 0038+0540 SAT SEP 09 18 41 19 19 19 45 19 59 04 54 05 20 05 58 18 40 22 55 03 50 9.2 0.2 2 0132+1232 SUN SEP 10 18 40 19 18 19 44 20 42 04 54 05 20 05 58 18 43 22 59 03 54 9.2 1.0 10 0227+1833 MON SEP 11 18 39 19 17 19 43 21 27 04 55 05 21 05 59 18 45 23 03 03 59 9.2 1.7 18 0324+2323 TUE SEP 12 18 38 19 16 19 42 22 16 04 55 05 21 05 59 18 48 23 07 04 03 9.2 2.6 27 0423+2644 WED SEP 13 18 37 19 15 19 41 23 10 04 55 05 21 05 59 18 51 23 11 04 07 9.2 3.5 37 0523+2828 THU SEP 14 18 36 19 14 19 40 00 07 04 56 05 21 05 59 18 54 23 15 04 12 9.3 4.5 48 0622+2834 FRI SEP 15 18 35 19 13 19 39 01 04 04 56 05 22 05 59 18 57 23 19 04 16 9.3 5.4 58 0718+2709 SAT SEP 16 18 34 19 12 19 38 02 01 04 56 05 22 06 00 19 00 23 23 04 20 9.3 6.4 68 0812+2426 SUN SEP 17 18 33 19 11 19 37 02 56 16 01 04 56 05 22 06 00 19 03 23 27 04 24 9.3 7.3 78 0902+2041 MON SEP 18 18 32 19 10 19 36 03 48 16 39 04 57 05 22 06 00 19 06 23 31 04 29 9.3 8.2 87 0949+1608 TUE SEP 19 18 32 19 09 19 35 04 38 17 13 04 57 05 23 06 00 19 09 23 35 04 33 9.4 9.0 96 1033+1100 WED SEP 20 18 31 19 08 19 34 05 26 17 45 04 57 05 23 06 00 19 12 23 39 04 36 9.4 9.4 100 1115+0531 THU SEP 21 18 30 19 07 19 33 06 13 18 15 04 57 05 23 06 01 19 15 23 43 04 40 9.4 9.4 100 1157-0007 FRI SEP 22 18 29 19 06 19 32 07 01 18 45 04 58 05 23 06 01 19 18 23 47 04 45 9.4 9.4 100 1238-0547 SAT SEP 23 18 28 19 05 19 31 07 49 19 16 04 58 05 23 06 01 19 21 23 51 04 49 9.5 9.5 100 1321-1116 SUN SEP 24 18 27 19 05 19 30 19 49 04 58 05 24 06 01 19 24 23 54 04 53 9.5 9.1 96 1406-1622 MON SEP 25 18 26 19 04 19 29 20 25 04 58 05 24 06 01 19 27 23 58 04 57 9.5 8.6 90 1453-2055 TUE SEP 26 18 25 19 03 19 28 21 06 04 59 05 24 06 02 19 30 00 02 05 02 9.5 7.9 82 1543-2438 WED SEP 27 18 24 19 02 19 27 21 52 04 59 05 24 06 02 19 33 00 06 05 06 9.5 7.1 74 1638-2717 THU SEP 28 18 23 19 01 19 26 22 44 04 59 05 25 06 02 19 35 00 10 05 10 9.6 6.2 65 1735-2836 FRI SEP 29 18 22 19 00 19 26 23 41 04 59 05 25 06 02 19 39 00 14 05 14 9.6 5.3 55 1834-2822 SAT SEP 30 18 22 18 59 19 25 00 43 04 59 05 25 06 03 19 42 00 18 05 18 9.6 4.3 44 1934-2629 ONE LINE REFERS TO EVENING DATE FULL MOON SEP 07 18:45 UT AND FOLLOWING MORNING. LAST QUARTER SEP 14 11:17 UT All dates and times are zone HST NEW MOON SEP 22 11:48 UT in upper table (except sid time). FIRST QUARTER SEP 30 11:06 UT