Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and METOP-B
TLE Epoch: 2023 12 4.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(METOP-B) METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 12/04/2023   03:53:37   (  72.83, 112.79) 12/04/2023   03:53:40  (  72.82, 112.71)    2.65                 3
 12/04/2023   04:44:21   ( -72.83, -79.89) 12/04/2023   04:44:21  ( -72.86, -79.89)    3.67                 0
 12/04/2023   05:35:07   (  72.83,  87.41) 12/04/2023   05:35:01  (  72.85,  87.42)    1.59                 6
 12/04/2023   06:25:51   ( -72.83,-105.27) 12/04/2023   06:25:43  ( -72.83,-105.28)    0.40                 8
 12/04/2023   07:16:37   (  72.84,  62.02) 12/04/2023   07:16:23  (  72.82,  62.02)    1.88                14
 12/04/2023   08:07:21   ( -72.83,-130.65) 12/04/2023   08:07:05  ( -72.81,-130.68)    3.14                16
 12/04/2023   08:58:07   (  72.84,  36.64) 12/04/2023   08:57:44  (  72.84,  36.73)    3.07                23
 12/04/2023   09:48:51   ( -72.84,-156.04) 12/04/2023   09:48:26  ( -72.83,-155.97)    2.44                25
 12/04/2023   10:39:36   (  72.79,  11.37) 12/04/2023   10:39:06  (  72.82,  11.34)    2.77                30
 12/04/2023   11:30:20   ( -72.79, 178.69) 12/04/2023   11:29:48  ( -72.80, 178.64)    2.16                32
 12/04/2023   12:21:06   (  72.80, -14.02) 12/04/2023   12:20:28  (  72.79, -14.06)    1.55                38
 12/04/2023   13:11:50   ( -72.79, 153.31) 12/04/2023   13:11:10  ( -72.78, 153.24)    2.81                40
 12/04/2023   14:02:36   (  72.80, -39.40) 12/04/2023   14:01:49  (  72.81, -39.35)    2.24                47
 12/04/2023   14:53:20   ( -72.80, 127.92) 12/04/2023   14:52:31  ( -72.80, 127.95)    1.02                49
 12/04/2023   15:44:06   (  72.80, -64.78) 12/04/2023   15:43:11  (  72.79, -64.74)    2.29                55
 12/04/2023   16:34:50   ( -72.80, 102.54) 12/04/2023   16:33:53  ( -72.77, 102.56)    3.09                57
 12/04/2023   17:25:35   (  72.76, -90.06) 12/04/2023   17:24:33  (  72.76, -90.14)    2.71                62
 12/04/2023   18:16:19   ( -72.75,  77.26) 12/04/2023   18:15:15  ( -72.75,  77.16)    3.47                64
 12/04/2023   19:07:05   (  72.76,-115.44) 12/04/2023   19:05:54  (  72.78,-115.43)    2.57                71
 12/04/2023   19:57:49   ( -72.76,  51.88) 12/04/2023   19:56:36  ( -72.77,  51.87)    1.49                73
 12/04/2023   20:48:32   (  72.61,-140.51) 12/04/2023   20:47:19  (  72.60,-141.14)   20.94                73
 12/04/2023   21:39:15   ( -72.56,  26.92) 12/04/2023   21:38:02  ( -72.54,  26.06)   28.50                73
 12/04/2023   22:29:56   (  72.31,-165.27) 12/04/2023   22:28:46  (  72.32,-167.04)   59.54                70
 12/04/2023   23:20:38   ( -72.21,   2.24) 12/04/2023   23:19:30  ( -72.21,   0.07)   73.79                68