Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 4 27.  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)
 04/29/2023   11:35:43   ( -70.68,-178.67) 04/29/2023   11:36:54  ( -70.68,-178.53)    5.32                71
 04/29/2023   12:26:26   (  70.51, -11.09) 04/29/2023   12:26:19  (  70.49, -11.15)    3.11                 7
 04/29/2023   13:17:01   ( -70.05, 156.94) 04/29/2023   13:15:49  ( -70.11, 155.96)   37.58                72
 05/02/2023   00:29:38   ( -70.61, -12.05) 05/02/2023   00:30:25  ( -70.59, -12.06)    2.03                47
 05/02/2023   01:20:22   (  70.49, 155.45) 05/02/2023   01:19:48  (  70.51, 155.47)    1.97                34
 05/04/2023   12:33:10   (  71.58, -14.51) 05/04/2023   12:34:15  (  71.49, -11.71)   98.95                65
 05/04/2023   13:23:35   ( -70.60, 154.47) 05/04/2023   13:23:55  ( -70.58, 154.52)    3.09                20
 05/04/2023   14:14:18   (  70.43, -37.95) 05/04/2023   14:13:19  (  70.43, -38.03)    2.92                59
 05/07/2023   01:26:49   (  70.64, 153.59) 05/07/2023   01:28:00  (  70.63, 153.54)    2.68                71
 05/07/2023   02:17:31   ( -70.55, -38.94) 05/07/2023   02:17:25  ( -70.53, -38.95)    2.05                 6
 05/07/2023   03:08:06   (  69.96, 129.29) 05/07/2023   03:06:56  (  70.00, 127.95)   50.98                70
 05/09/2023   14:20:45   (  70.60, -39.83) 05/09/2023   14:21:29  (  70.60, -39.90)    2.57                44
 05/09/2023   15:11:27   ( -70.50, 127.64) 05/09/2023   15:10:54  ( -70.50, 127.62)    0.90                33