KECK OBSERVATORY CALENDAR FOR 2041 -ASTRONOMICAL (computed for altitude 4160.0 m) ASTRONOMICAL(18 deg) TWILIGHT/DAWN MOON(midnight) DATE(HST) SUN TWILIGHT ENDS MOON MOON DAWN BEGINS SUN SIDEREAL TIMES NIGHT (18 deg) Zenith 2041 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ RA DEC Dist 12 18 18 12 18 18 h h % h m d m deg SUN SEP 01 18 48 19 26 19 53 22 39 04 52 05 18 05 56 18 18 22 26 03 19 9.0 6.2 69 1525-2039 >90 MON SEP 02 18 47 19 25 19 52 23 24 04 52 05 18 05 57 18 21 22 30 03 23 9.0 5.5 60 1618-2422 >90 TUE SEP 03 18 46 19 24 19 51 00 14 04 52 05 19 05 57 18 24 22 34 03 26 9.0 4.6 51 1717-2643 90 WED SEP 04 18 45 19 23 19 50 01 12 04 53 05 19 05 57 18 27 22 38 03 31 9.0 3.7 40 1816-2804 79 THU SEP 05 18 44 19 22 19 49 14 51 02 15 04 53 05 19 05 57 18 30 22 42 03 35 9.1 2.6 29 1920-2731 68 FRI SEP 06 18 43 19 21 19 48 15 50 03 22 04 53 05 19 05 57 18 33 22 46 03 39 9.1 1.5 16 2024-2503 57 SAT SEP 07 18 43 19 21 19 47 16 44 04 30 04 54 05 20 05 58 18 36 22 49 03 44 9.1 0.4 4 2127-2051 45 SUN SEP 08 18 42 19 20 19 46 17 33 05 36 04 54 05 20 05 58 18 39 22 53 03 48 9.1 0.0 0 2227-1513 36 MON SEP 09 18 41 19 19 19 45 18 18 06 40 04 54 05 20 05 58 18 42 22 57 03 52 9.2 0.0 0 2324-0836 29 TUE SEP 10 18 40 19 18 19 44 19 00 04 54 05 20 05 58 18 45 23 01 03 56 9.2 0.0 0 0019-0132 29 WED SEP 11 18 39 19 17 19 43 19 41 04 55 05 21 05 59 18 48 23 05 04 01 9.2 0.0 0 0113 0530 34 THU SEP 12 18 38 19 16 19 42 20 21 04 55 05 21 05 59 18 50 23 09 04 05 9.2 0.6 7 0207 1203 43 FRI SEP 13 18 37 19 15 19 41 21 03 04 55 05 21 05 59 18 53 23 13 04 09 9.2 1.4 14 0301 1743 54 SAT SEP 14 18 36 19 14 19 40 21 47 04 56 05 21 05 59 18 56 23 17 04 14 9.3 2.1 22 0357 2214 65 SUN SEP 15 18 35 19 13 19 39 22 35 04 56 05 22 05 59 18 59 23 21 04 18 9.3 2.9 31 0454 2522 76 MON SEP 16 18 34 19 12 19 38 23 27 04 56 05 22 06 00 19 02 23 25 04 22 9.3 3.8 41 0550 2658 87 TUE SEP 17 18 33 19 11 19 37 00 20 04 56 05 22 06 00 19 05 23 29 04 26 9.3 4.7 50 0647 2715 >90 WED SEP 18 18 32 19 10 19 36 01 15 14 39 04 57 05 22 06 00 19 08 23 33 04 31 9.3 5.6 60 0741 2606 >90 THU SEP 19 18 32 19 09 19 35 02 10 15 26 04 57 05 23 06 00 19 11 23 37 04 35 9.4 6.6 70 0833 2345 >90 FRI SEP 20 18 31 19 08 19 34 03 03 16 08 04 57 05 23 06 00 19 14 23 41 04 39 9.4 7.5 79 0922 2024 >90 SAT SEP 21 18 30 19 07 19 33 03 54 16 46 04 57 05 23 06 01 19 17 23 45 04 42 9.4 8.4 88 1008 1615 >90 SUN SEP 22 18 29 19 06 19 32 04 44 17 21 04 58 05 23 06 01 19 20 23 49 04 47 9.4 9.2 97 1052 1131 >90 MON SEP 23 18 28 19 05 19 31 05 33 17 53 04 58 05 23 06 01 19 23 23 53 04 51 9.5 9.5 100 1135 0622 >90 TUE SEP 24 18 27 19 05 19 30 06 21 18 24 04 58 05 24 06 01 19 26 23 56 04 55 9.5 9.5 100 1216 0058 >90 WED SEP 25 18 26 19 04 19 29 18 55 04 58 05 24 06 01 19 29 00 00 04 59 9.5 9.5 100 1258-0432 >90 THU SEP 26 18 25 19 03 19 28 19 27 04 59 05 24 06 02 19 32 00 04 05 04 9.5 9.5 100 1341-0956 >90 FRI SEP 27 18 24 19 02 19 27 20 01 04 59 05 24 06 02 19 35 00 08 05 08 9.5 9.0 94 1426-1503 >90 SAT SEP 28 18 23 19 01 19 26 20 39 04 59 05 25 06 02 19 38 00 12 05 12 9.6 8.3 87 1514-1941 >90 SUN SEP 29 18 23 19 00 19 26 21 21 04 59 05 25 06 02 19 41 00 16 05 16 9.6 7.6 79 1605-2334 >90 MON SEP 30 18 22 18 59 19 25 22 08 05 00 05 25 06 03 19 44 00 20 05 21 9.6 6.9 71 1700-2624 >90 ONE LINE REFERS TO EVENING DATE FIRST QUARTER Sep 03 17:19 UT AND FOLLOWING MORNING. FULL MOON Sep 10 09:25 UT All dates and times are zone HST LAST QUARTER Sep 17 05:32 UT in upper table (except sid time). NEW MOON Sep 25 08:42 UT