KECK OBSERVATORY CALENDAR FOR 1999  -NAUTICAL
                                 (computed for altitude 4145.0 m)
                                                                       NAUTICAL(12 deg)  TWILIGHT/DAWN    MOON
  DATE(HST)   SUN   TWILIGHT ENDS  MOON   MOON   DAWN BEGINS   SUN     SIDEREAL TIMES    NIGHT (12 deg)  RA DEC
    1999      SET                  RISE   SET                  RISE   TWI    MID   DAWN  LENGTH DARK___ 
                      12     18                   18     12            12            12     h    h    %  midnight
 SUN AUG 01  19 10  19 50  20 18  22 11         04 38  05 06  05 47  16 10  20 20  01 27   9.3  2.3  25 0047+0011
 MON AUG 02  19 09  19 50  20 18  22 53         04 39  05 07  05 47  16 14  20 24  01 32   9.3  3.0  32 0138+0453
 TUE AUG 03  19 09  19 49  20 17  23 37         04 39  05 07  05 48  16 17  20 28  01 36   9.3  3.8  40 0232+0924
 WED AUG 04  19 08  19 48  20 16  00 23         04 40  05 08  05 48  16 19  20 32  01 41   9.3  4.6  49 0327+1327
 THU AUG 05  19 07  19 48  20 16  01 13         04 40  05 08  05 48  16 23  20 36  01 45   9.3  5.4  58 0424+1645
 FRI AUG 06  19 07  19 47  20 15  02 06         04 41  05 09  05 49  16 26  20 40  01 50   9.4  6.3  67 0524+1903
 SAT AUG 07  19 06  19 46  20 14  03 04         04 41  05 09  05 49  16 29  20 44  01 54   9.4  7.3  77 0625+2007
 SUN AUG 08  19 06  19 46  20 14  04 05  16 58  04 42  05 09  05 49  16 33  20 48  01 58   9.4  8.3  88 0727+1952
 MON AUG 09  19 05  19 45  20 13  05 06  17 56  04 42  05 10  05 50  16 36  20 52  02 03   9.4  9.3  99 0827+1819
 TUE AUG 10  19 04  19 44  20 12  06 07  18 49  04 43  05 10  05 50  16 39  20 56  02 07   9.4  9.4 100 0925+1541
 WED AUG 11  19 04  19 44  20 11  07 06  19 37  04 43  05 11  05 50  16 43  21 00  02 12   9.4  9.4 100 1021+1211
 THU AUG 12  19 03  19 43  20 11         20 22  04 44  05 11  05 51  16 46  21 04  02 16   9.5  8.8  93 1113+0808
 FRI AUG 13  19 03  19 42  20 10         21 03  04 44  05 12  05 51  16 49  21 08  02 21   9.5  8.2  85 1203+0348
 SAT AUG 14  19 02  19 41  20 09         21 42  04 44  05 12  05 51  16 52  21 12  02 24   9.5  7.5  78 1251-0035
 SUN AUG 15  19 01  19 41  20 08         22 20  04 45  05 12  05 52  16 56  21 16  02 28   9.5  6.9  72 1338-0450
 MON AUG 16  19 00  19 40  20 07         22 58  04 45  05 13  05 52  16 59  21 19  02 33   9.6  6.2  65 1424-0849
 TUE AUG 17  19 00  19 39  20 06         23 36  04 46  05 13  05 52  17 02  21 23  02 37   9.6  5.6  58 1511-1222
 WED AUG 18  18 59  19 38  20 05         00 16  04 46  05 13  05 53  17 05  21 27  02 41   9.6  5.0  51 1558-1524
 THU AUG 19  18 58  19 37  20 05         00 58  04 47  05 14  05 53  17 08  21 31  02 46   9.6  4.3  44 1646-1746
 FRI AUG 20  18 58  19 37  20 04         01 42  04 47  05 14  05 53  17 12  21 35  02 50   9.6  3.5  36 1736-1923
 SAT AUG 21  18 57  19 36  20 03         02 30  04 47  05 14  05 54  17 14  21 39  02 54   9.6  2.7  28 1827-2009
 SUN AUG 22  18 56  19 35  20 02         03 20  04 48  05 15  05 54  17 17  21 43  02 59   9.7  1.9  19 1919-1959
 MON AUG 23  18 55  19 34  20 01  16 25  04 12  04 48  05 15  05 54  17 20  21 47  03 03   9.7  1.1  10 2012-1850
 TUE AUG 24  18 54  19 33  20 00  17 13  05 06  04 49  05 15  05 54  17 23  21 51  03 07   9.7  0.2   1 2105-1645
 WED AUG 25  18 54  19 32  19 59  17 59  06 02  04 49  05 16  05 55  17 26  21 55  03 12   9.7  0.0   0 2157-1345
 THU AUG 26  18 53  19 32  19 58  18 44  06 57  04 49  05 16  05 55  17 30  21 59  03 16   9.7  0.0   0 2250-1000
 FRI AUG 27  18 52  19 31  19 57  19 27  07 54  04 50  05 16  05 55  17 33  22 03  03 20   9.8  0.0   0 2341-0540
 SAT AUG 28  18 51  19 30  19 56  20 09         04 50  05 17  05 55  17 36  22 07  03 25   9.8  0.6   6 0033-0058
 SUN AUG 29  18 50  19 29  19 55  20 52         04 51  05 17  05 56  17 39  22 11  03 29   9.8  1.4  14 0126+0349
 MON AUG 30  18 49  19 28  19 54  21 36         04 51  05 17  05 56  17 42  22 15  03 33   9.8  2.1  21 0219+0827
 TUE AUG 31  18 49  19 27  19 53  22 21         04 51  05 18  05 56  17 45  22 19  03 38   9.8  2.9  29 0314+1239

                ONE LINE REFERS TO EVENING DATE    LAST QUARTER   AUG 04   17:29  UT
                AND FOLLOWING MORNING.             NEW MOON       AUG 11   11:11  UT
                All dates and times are zone HST   FIRST QUARTER  AUG 19   01:51  UT
                in upper table (except sid time).  FULL MOON      AUG 26   23:49  UT