KECK OBSERVATORY CALENDAR FOR 2018 -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 2018 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 FRI JUN 01 19 08 19 50 20 20 21 37 04 19 04 49 05 31 12 41 16 21 20 41 8.0 1.3 16 1946-2040 64 SAT JUN 02 19 08 19 51 20 20 22 22 04 19 04 49 05 31 12 45 16 25 20 45 8.0 2.0 25 2036-1909 73 SUN JUN 03 19 09 19 51 20 21 23 05 04 19 04 49 05 31 12 50 16 29 20 49 8.0 2.7 34 2125-1646 81 MON JUN 04 19 09 19 51 20 21 23 45 04 19 04 49 05 31 12 54 16 33 20 53 8.0 3.4 42 2211-1335 90 TUE JUN 05 19 10 19 52 20 22 00 24 04 19 04 49 05 31 12 59 16 37 20 57 7.9 4.0 50 2300-1011 >90 WED JUN 06 19 10 19 52 20 22 01 03 04 19 04 49 05 31 13 03 16 41 21 01 7.9 4.7 58 2347-0607 >90 THU JUN 07 19 10 19 53 20 23 01 42 04 19 04 49 05 31 13 07 16 45 21 05 7.9 5.3 67 0035-0144 >90 FRI JUN 08 19 11 19 53 20 23 02 21 14 24 04 19 04 49 05 31 13 11 16 49 21 09 7.9 6.0 75 0123 0251 >90 SAT JUN 09 19 11 19 53 20 23 03 03 15 20 04 19 04 49 05 31 13 15 16 53 21 13 7.9 6.7 84 0214 0724 >90 SUN JUN 10 19 11 19 54 20 24 03 48 16 17 04 19 04 49 05 31 13 20 16 57 21 17 7.9 7.4 93 0307 1142 >90 MON JUN 11 19 12 19 54 20 24 04 38 17 18 04 19 04 49 05 31 13 24 17 01 21 21 7.9 7.9 100 0404 1526 >90 TUE JUN 12 19 12 19 55 20 25 05 33 18 22 04 19 04 49 05 31 13 29 17 05 21 24 7.9 7.9 100 0504 1815 >90 WED JUN 13 19 12 19 55 20 25 06 33 19 27 04 19 04 49 05 31 13 33 17 09 21 28 7.9 7.9 100 0606 1952 >90 THU JUN 14 19 13 19 55 20 25 20 31 04 19 04 49 05 31 13 37 17 13 21 32 7.9 7.8 98 0710 2005 >90 FRI JUN 15 19 13 19 56 20 26 21 32 04 19 04 49 05 32 13 42 17 17 21 36 7.9 6.8 86 0812 1851 >90 SAT JUN 16 19 13 19 56 20 26 22 27 04 19 04 49 05 32 13 46 17 21 21 40 7.9 5.9 74 0913 1620 >90 SUN JUN 17 19 13 19 56 20 26 23 17 04 19 04 49 05 32 13 50 17 24 21 44 7.9 5.0 63 1011 1250 >90 MON JUN 18 19 14 19 56 20 27 00 03 04 19 04 49 05 32 13 55 17 28 21 48 7.9 4.3 54 1111 0807 >90 TUE JUN 19 19 14 19 57 20 27 00 46 04 19 04 50 05 32 13 59 17 32 21 52 7.9 3.5 45 1158 0359 83 WED JUN 20 19 14 19 57 20 27 01 26 04 20 04 50 05 32 14 03 17 36 21 57 7.9 2.9 36 1248-0043 73 THU JUN 21 19 14 19 57 20 27 02 06 04 20 04 50 05 33 14 07 17 40 22 01 7.9 2.2 28 1337-0520 65 FRI JUN 22 19 15 19 57 20 28 14 28 02 45 04 20 04 50 05 33 14 12 17 44 22 05 7.9 1.6 20 1426-0939 57 SAT JUN 23 19 15 19 58 20 28 15 20 03 26 04 20 04 50 05 33 14 16 17 48 22 09 7.9 0.9 11 1515-1329 50 SUN JUN 24 19 15 19 58 20 28 16 12 04 08 04 21 04 51 05 33 14 19 17 52 22 14 7.9 0.2 2 1605-1642 45 MON JUN 25 19 15 19 58 20 28 17 04 04 52 04 21 04 51 05 34 14 23 17 56 22 18 7.9 0.0 0 1656-1909 42 TUE JUN 26 19 15 19 58 20 28 17 55 05 38 04 21 04 51 05 34 14 27 18 00 22 22 7.9 0.0 0 1747-2044 41 WED JUN 27 19 16 19 58 20 28 18 45 06 26 04 21 04 52 05 34 14 31 18 04 22 26 7.9 0.0 0 1839-2123 42 THU JUN 28 19 16 19 58 20 28 19 33 04 22 04 52 05 34 14 35 18 08 22 31 7.9 0.0 0 1931-2104 46 FRI JUN 29 19 16 19 58 20 29 20 19 04 22 04 52 05 35 14 40 18 12 22 35 7.9 0.0 0 2021-1951 51 SAT JUN 30 19 16 19 58 20 29 21 03 04 22 04 53 05 35 14 44 18 16 22 38 7.9 0.6 7 2111-1746 57 ONE LINE REFERS TO EVENING DATE LAST QUARTER Jun 06 18:32 UT AND FOLLOWING MORNING. NEW MOON Jun 13 19:43 UT All dates and times are zone HST FIRST QUARTER Jun 20 10:51 UT in upper table (except sid time). FULL MOON Jun 28 04:52 UT