KECK OBSERVATORY CALENDAR FOR 2015 -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 2015 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 SAT AUG 01 19 10 19 50 20 19 20 03 04 38 05 06 05 47 16 39 20 21 01 00 8.3 0.0 0 2234-0719 42 SUN AUG 02 19 09 19 50 20 18 20 51 04 39 05 07 05 47 16 42 20 25 01 05 8.4 0.6 6 2331-0245 51 MON AUG 03 19 09 19 49 20 17 21 38 04 39 05 07 05 48 16 45 20 29 01 08 8.4 1.4 16 0027 0153 61 TUE AUG 04 19 08 19 48 20 17 22 25 04 40 05 08 05 48 16 49 20 33 01 13 8.4 2.1 25 0123 0618 71 WED AUG 05 19 07 19 48 20 16 23 11 04 40 05 08 05 48 16 52 20 37 01 17 8.4 2.9 34 0218 1012 82 THU AUG 06 19 07 19 47 20 15 23 59 04 41 05 09 05 49 16 55 20 41 01 22 8.4 3.7 44 0308 1256 >90 FRI AUG 07 19 06 19 46 20 14 00 48 04 41 05 09 05 49 16 58 20 44 01 26 8.4 4.6 54 0409 1551 >90 SAT AUG 08 19 06 19 46 20 14 01 39 14 27 04 42 05 09 05 50 17 02 20 48 01 31 8.5 5.4 63 0503 1718 >90 SUN AUG 09 19 05 19 45 20 13 02 30 15 21 04 42 05 10 05 50 17 05 20 52 01 35 8.5 6.3 74 0558 1748 >90 MON AUG 10 19 05 19 44 20 12 03 23 16 14 04 43 05 10 05 50 17 08 20 56 01 40 8.5 7.2 84 0651 1720 >90 TUE AUG 11 19 04 19 44 20 11 04 15 17 02 04 43 05 11 05 51 17 11 21 00 01 44 8.5 8.1 94 0743 1601 >90 WED AUG 12 19 03 19 43 20 11 05 07 17 48 04 44 05 11 05 51 17 15 21 04 01 49 8.6 8.6 100 0833 1357 >90 THU AUG 13 19 03 19 42 20 10 05 58 18 31 04 44 05 12 05 51 17 17 21 08 01 53 8.6 8.6 100 0921 1117 >90 FRI AUG 14 19 02 19 41 20 09 06 48 19 11 04 44 05 12 05 51 17 20 21 12 01 57 8.6 8.6 100 1008 0811 >90 SAT AUG 15 19 01 19 41 20 08 19 50 04 45 05 12 05 52 17 23 21 16 02 02 8.6 8.6 100 1054 0445 >90 SUN AUG 16 19 01 19 40 20 07 20 26 04 45 05 13 05 52 17 26 21 20 02 06 8.6 8.3 96 1138 0110 >90 MON AUG 17 19 00 19 39 20 06 21 03 04 46 05 13 05 52 17 29 21 24 02 11 8.7 7.7 89 1223-0229 >90 TUE AUG 18 18 59 19 38 20 06 21 40 04 46 05 13 05 53 17 33 21 28 02 15 8.7 7.1 81 1307-0604 >90 WED AUG 19 18 58 19 38 20 05 22 18 04 47 05 14 05 53 17 36 21 32 02 20 8.7 6.5 74 1353-0927 >90 THU AUG 20 18 58 19 37 20 04 22 58 04 47 05 14 05 53 17 39 21 36 02 24 8.7 5.8 66 1440-1231 >90 FRI AUG 21 18 57 19 36 20 03 23 40 04 48 05 15 05 54 17 42 21 40 02 28 8.8 5.1 58 1529-1508 >90 SAT AUG 22 18 56 19 35 20 02 00 26 04 48 05 15 05 54 17 45 21 44 02 32 8.8 4.4 49 1621-1702 88 SUN AUG 23 18 55 19 34 20 01 01 15 04 48 05 15 05 54 17 48 21 48 02 36 8.8 3.6 40 1714-1819 77 MON AUG 24 18 54 19 33 20 00 14 18 02 09 04 49 05 16 05 54 17 51 21 51 02 41 8.8 2.7 30 1810-1840 67 TUE AUG 25 18 54 19 32 19 59 15 12 03 06 04 49 05 16 05 55 17 54 21 55 02 45 8.8 1.7 19 1908-1753 56 WED AUG 26 18 53 19 32 19 58 16 06 04 07 04 49 05 16 05 55 17 57 21 59 02 49 8.8 0.7 7 2008-1600 45 THU AUG 27 18 52 19 31 19 57 16 59 05 09 04 50 05 16 05 55 18 00 22 03 02 54 8.9 0.0 0 2108-1303 36 FRI AUG 28 18 51 19 30 19 56 17 50 06 12 04 50 05 17 05 55 18 03 22 07 02 58 8.9 0.0 0 2207-0911 29 SAT AUG 29 18 50 19 29 19 55 18 40 04 51 05 17 05 56 18 06 22 11 03 03 8.9 0.0 0 2306-0442 28 SUN AUG 30 18 50 19 28 19 54 19 29 04 51 05 17 05 56 18 08 22 15 03 07 9.0 0.0 0 0005 0004 33 MON AUG 31 18 49 19 27 19 53 20 17 04 51 05 18 05 56 18 11 22 19 03 11 9.0 0.4 4 0103 0445 43 ONE LINE REFERS TO EVENING DATE LAST QUARTER Aug 07 02:03 UT AND FOLLOWING MORNING. NEW MOON Aug 14 14:51 UT All dates and times are zone HST FIRST QUARTER Aug 22 19:31 UT in upper table (except sid time). FULL MOON Aug 29 18:36 UT