KECK OBSERVATORY CALENDAR FOR 2007  -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
    2007      SET                  RISE   SET                  RISE   TWI    MID   DAWN  LENGTH DARK___ 
                      12     18                   18     12            18            18     h    h    %  midnight
 WED AUG 01  19 10  19 50  20 18  21 02         04 38  05 06  05 47  16 38  20 21  00 59   8.3  0.7   8 2338-0036
 THU AUG 02  19 09  19 50  20 18  21 40         04 39  05 07  05 47  16 42  20 25  01 04   8.4  1.4  16 0028+0607
 FRI AUG 03  19 09  19 49  20 17  22 18         04 39  05 07  05 48  16 45  20 28  01 08   8.4  2.0  24 0120+1232
 SAT AUG 04  19 08  19 48  20 16  23 00         04 40  05 08  05 48  16 48  20 32  01 13   8.4  2.7  32 0214+1818
 SUN AUG 05  19 07  19 48  20 16  23 45         04 40  05 08  05 48  16 52  20 36  01 17   8.4  3.5  41 0311+2303
 MON AUG 06  19 07  19 47  20 15  00 37         04 41  05 09  05 49  16 55  20 40  01 22   8.4  4.4  51 0411+2625
 TUE AUG 07  19 06  19 46  20 14  01 34         04 41  05 09  05 49  16 58  20 44  01 26   8.4  5.3  63 0513+2808
 WED AUG 08  19 06  19 46  20 14  02 35         04 42  05 09  05 49  17 02  20 48  01 31   8.5  6.3  75 0616+2804
 THU AUG 09  19 05  19 45  20 13  03 38  16 58  04 42  05 10  05 50  17 05  20 52  01 35   8.5  7.4  87 0717+2617
 FRI AUG 10  19 04  19 44  20 12  04 39  17 49  04 43  05 10  05 50  17 07  20 56  01 40   8.5  8.4  99 0814+2302
 SAT AUG 11  19 04  19 44  20 11  05 38  18 34  04 43  05 11  05 50  17 10  21 00  01 44   8.5  8.5 100 0907+1839
 SUN AUG 12  19 03  19 43  20 11  06 34  19 13  04 44  05 11  05 51  17 14  21 04  01 49   8.6  8.6 100 0957+1328
 MON AUG 13  19 03  19 42  20 10  07 26  19 49  04 44  05 12  05 51  17 17  21 08  01 53   8.6  8.6 100 1043+0750
 TUE AUG 14  19 02  19 41  20 09         20 21  04 44  05 12  05 51  17 20  21 12  01 57   8.6  8.4  97 1127+0200
 WED AUG 15  19 01  19 41  20 08         20 53  04 45  05 12  05 52  17 23  21 16  02 02   8.6  7.9  91 1210-0347
 THU AUG 16  19 00  19 40  20 07         21 24  04 45  05 13  05 52  17 26  21 20  02 06   8.6  7.4  85 1253-0921
 FRI AUG 17  19 00  19 39  20 06         21 57  04 46  05 13  05 52  17 29  21 24  02 10   8.7  6.8  78 1337-1432
 SAT AUG 18  18 59  19 38  20 05         22 32  04 46  05 13  05 53  17 32  21 28  02 14   8.7  6.2  71 1423-1910
 SUN AUG 19  18 58  19 37  20 05         23 10  04 47  05 14  05 53  17 36  21 32  02 19   8.7  5.6  64 1511-2304
 MON AUG 20  18 58  19 37  20 04         23 53  04 47  05 14  05 53  17 39  21 36  02 23   8.7  4.9  56 1602-2602
 TUE AUG 21  18 57  19 36  20 03         00 41  04 47  05 14  05 54  17 42  21 39  02 27   8.7  4.1  46 1655-2751
 WED AUG 22  18 56  19 35  20 02         01 34  04 48  05 15  05 54  17 45  21 43  02 32   8.8  3.2  36 1752-2821
 THU AUG 23  18 55  19 34  20 01         02 31  04 48  05 15  05 54  17 48  21 47  02 36   8.8  2.3  25 1849-2721
 FRI AUG 24  18 54  19 33  20 00  16 04  03 31  04 49  05 15  05 54  17 51  21 51  02 41   8.8  1.3  14 1946-2451
 SAT AUG 25  18 54  19 32  19 59  16 52  04 32  04 49  05 16  05 55  17 54  21 55  02 45   8.8  0.3   3 2042-2054
 SUN AUG 26  18 53  19 32  19 58  17 37  05 33  04 49  05 16  05 55  17 57  21 59  02 49   8.8  0.0   0 2137-1543
 MON AUG 27  18 52  19 31  19 57  18 19  06 33  04 50  05 16  05 55  17 59  22 03  02 54   8.9  0.0   0 2229-0935
 TUE AUG 28  18 51  19 30  19 56  18 58  07 33  04 50  05 17  05 55  18 02  22 07  02 58   8.9  0.0   0 2321-0252
 WED AUG 29  18 50  19 29  19 55  19 37         04 51  05 17  05 56  18 05  22 11  03 03   8.9  0.0   0 0013+0403
 THU AUG 30  18 49  19 28  19 54  20 16         04 51  05 17  05 56  18 08  22 15  03 07   9.0  0.4   4 0105+1048
 FRI AUG 31  18 49  19 27  19 53  20 58         04 51  05 18  05 56  18 11  22 19  03 11   9.0  1.1  12 0200+1657

                ONE LINE REFERS TO EVENING DATE    LAST QUARTER   AUG 05   21:23  UT
                AND FOLLOWING MORNING.             NEW MOON       AUG 12   23:03  UT
                All dates and times are zone HST   FIRST QUARTER  AUG 20   23:57  UT
                in upper table (except sid time).  FULL MOON      AUG 28   10:36  UT