Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 7 31.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 07/31/2023   20:09:19   (  71.01,-127.73) 07/31/2023   20:10:31  (  70.95,-127.52)    9.52                72
 07/31/2023   20:59:59   ( -70.81,  39.92) 07/31/2023   20:59:57  ( -70.82,  39.93)    1.16                 2
 07/31/2023   21:50:36   (  70.33,-152.01) 07/31/2023   21:49:25  (  70.43,-152.99)   38.13                71
 08/03/2023   09:03:08   (  70.88,  39.02) 08/03/2023   09:03:53  (  70.87,  38.98)    1.70                45
 08/03/2023   09:53:50   ( -70.78,-153.51) 08/03/2023   09:53:18  ( -70.79,-153.49)    0.71                32
 08/05/2023   21:06:32   ( -71.79,  36.64) 08/05/2023   21:07:38  ( -71.68,  39.25)   91.56                66
 08/05/2023   21:57:00   (  70.86,-154.42) 08/05/2023   21:57:14  (  70.86,-154.39)    1.36                14
 08/05/2023   22:47:42   ( -70.76,  13.06) 08/05/2023   22:46:39  ( -70.78,  13.14)    3.56                63
 08/08/2023   10:00:08   ( -70.95,-155.35) 08/08/2023   10:01:12  ( -70.94,-155.29)    2.13                64
 08/08/2023   10:50:52   (  70.85,  12.13) 08/08/2023   10:50:35  (  70.83,  12.20)    3.18                17
 08/08/2023   11:41:20   ( -70.01,-179.23) 08/08/2023   11:40:12  ( -70.09, 178.77)   76.13                68
 08/10/2023   22:53:59   ( -70.88,  11.28) 08/10/2023   22:54:33  ( -70.89,  11.26)    0.79                34
 08/10/2023   23:44:43   (  70.79, 178.75) 08/10/2023   23:43:56  (  70.77, 178.76)    1.43                47
 08/13/2023   10:57:14   (  71.25,   9.88) 08/13/2023   10:58:25  (  71.11,  10.60)   29.85                71
 08/13/2023   11:47:50   ( -70.83, 177.90) 08/13/2023   11:47:53  ( -70.86, 177.86)    3.21                 3
 08/13/2023   12:38:31   (  70.58, -14.37) 08/13/2023   12:37:18  (  70.64, -14.81)   17.30                73