KECK OBSERVATORY CALENDAR FOR 1998 -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 1998 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 18 18 h h % midnight MON JUN 01 19 08 19 50 20 20 01 08 04 19 04 49 05 31 12 40 16 21 20 41 8.0 3.2 39 1111+0614 TUE JUN 02 19 08 19 50 20 20 01 45 04 19 04 49 05 31 12 44 16 25 20 44 8.0 2.6 32 1157+0227 WED JUN 03 19 09 19 51 20 21 02 22 04 19 04 49 05 31 12 49 16 29 20 48 8.0 1.9 24 1241-0123 THU JUN 04 19 09 19 51 20 21 02 58 04 19 04 49 05 31 12 53 16 33 20 52 8.0 1.3 16 1326-0510 FRI JUN 05 19 09 19 52 20 22 03 36 04 19 04 49 05 31 12 58 16 37 20 56 7.9 0.7 9 1412-0846 SAT JUN 06 19 10 19 52 20 22 16 07 04 15 04 19 04 49 05 31 13 02 16 41 21 00 7.9 0.1 0 1459-1203 SUN JUN 07 19 10 19 53 20 23 16 57 04 57 04 19 04 49 05 31 13 07 16 44 21 04 7.9 0.0 0 1548-1453 MON JUN 08 19 11 19 53 20 23 17 49 05 42 04 19 04 49 05 31 13 11 16 48 21 08 7.9 0.0 0 1638-1705 TUE JUN 09 19 11 19 53 20 23 18 41 06 30 04 19 04 49 05 31 13 15 16 52 21 12 7.9 0.0 0 1731-1831 WED JUN 10 19 11 19 54 20 24 19 34 07 22 04 19 04 49 05 31 13 20 16 56 21 16 7.9 0.0 0 1825-1902 THU JUN 11 19 12 19 54 20 24 20 26 04 19 04 49 05 31 13 24 17 00 21 20 7.9 0.0 0 1920-1833 FRI JUN 12 19 12 19 55 20 25 21 17 04 19 04 49 05 31 13 29 17 04 21 24 7.9 0.9 10 2015-1704 SAT JUN 13 19 12 19 55 20 25 22 07 04 19 04 49 05 31 13 33 17 08 21 28 7.9 1.7 21 2110-1438 SUN JUN 14 19 13 19 55 20 25 22 54 04 19 04 49 05 31 13 36 17 12 21 32 7.9 2.5 31 2204-1122 MON JUN 15 19 13 19 56 20 26 23 39 04 19 04 49 05 32 13 41 17 16 21 36 7.9 3.2 40 2258-0727 TUE JUN 16 19 13 19 56 20 26 00 24 04 19 04 49 05 32 13 45 17 20 21 40 7.9 4.0 50 2351-0304 WED JUN 17 19 13 19 56 20 26 01 08 04 19 04 49 05 32 13 49 17 24 21 44 7.9 4.7 59 0045+0131 THU JUN 18 19 14 19 56 20 27 01 54 04 19 04 49 05 32 13 54 17 28 21 48 7.9 5.4 69 0139+0605 FRI JUN 19 19 14 19 57 20 27 02 41 04 19 04 50 05 32 13 58 17 32 21 51 7.9 6.2 79 0235+1021 SAT JUN 20 19 14 19 57 20 27 03 30 16 03 04 20 04 50 05 32 14 02 17 36 21 56 7.9 7.0 89 0332+1400 SUN JUN 21 19 14 19 57 20 27 04 22 17 05 04 20 04 50 05 33 14 06 17 40 22 00 7.9 7.9 100 0431+1647 MON JUN 22 19 15 19 57 20 28 05 17 18 06 04 20 04 50 05 33 14 11 17 44 22 04 7.9 7.9 100 0530+1830 TUE JUN 23 19 15 19 58 20 28 06 14 19 06 04 20 04 50 05 33 14 15 17 48 22 08 7.9 7.9 100 0630+1902 WED JUN 24 19 15 19 58 20 28 07 11 20 02 04 21 04 51 05 33 14 19 17 51 22 13 7.9 7.9 100 0728+1825 THU JUN 25 19 15 19 58 20 28 20 54 04 21 04 51 05 34 14 23 17 55 22 17 7.9 7.5 94 0824+1647 FRI JUN 26 19 15 19 58 20 28 21 42 04 21 04 51 05 34 14 27 17 59 22 21 7.9 6.6 84 0917+1419 SAT JUN 27 19 16 19 58 20 28 22 25 04 21 04 52 05 34 14 31 18 03 22 25 7.9 5.9 75 1008+1113 SUN JUN 28 19 16 19 58 20 28 23 05 04 22 04 52 05 34 14 35 18 07 22 30 7.9 5.3 66 1056+0742 MON JUN 29 19 16 19 58 20 28 23 44 04 22 04 52 05 35 14 39 18 11 22 34 7.9 4.6 58 1142+0356 TUE JUN 30 19 16 19 58 20 29 00 20 04 22 04 53 05 35 14 44 18 15 22 38 7.9 4.0 51 1227+0003 ONE LINE REFERS TO EVENING DATE FIRST QUARTER JUN 02 01:49 UT AND FOLLOWING MORNING. FULL MOON JUN 10 04:23 UT All dates and times are zone HST LAST QUARTER JUN 17 10:41 UT in upper table (except sid time). NEW MOON JUN 24 03:53 UT