Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 4 28.  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   ( -70.69,-178.70) 04/29/2023   11:36:54  ( -70.67,-178.55)    6.17                71
 04/29/2023   12:26:26   (  70.52, -11.11) 04/29/2023   12:26:18  (  70.53, -11.09)    1.33                 8
 04/29/2023   13:17:00   ( -70.01, 157.00) 04/29/2023   13:15:49  ( -70.10, 155.94)   41.09                71
 05/02/2023   00:29:39   ( -70.63, -12.08) 05/02/2023   00:30:25  ( -70.63, -12.00)    2.98                46
 05/02/2023   01:20:23   (  70.51, 155.42) 05/02/2023   01:19:49  (  70.49, 155.46)    1.86                34
 05/04/2023   12:33:10   (  71.60, -14.54) 05/04/2023   12:34:15  (  71.49, -11.73)   99.84                65
 05/04/2023   13:23:34   ( -70.57, 154.53) 05/04/2023   13:23:55  ( -70.57, 154.50)    0.80                21
 05/04/2023   14:14:18   (  70.45, -37.98) 05/04/2023   14:13:19  (  70.43, -38.04)    3.44                59
 05/07/2023   01:26:49   (  70.66, 153.56) 05/07/2023   01:27:59  (  70.68, 153.62)    2.80                70
 05/07/2023   02:17:30   ( -70.52, -38.89) 05/07/2023   02:17:25  ( -70.53, -38.95)    2.83                 5
 05/07/2023   03:08:06   (  69.98, 129.26) 05/07/2023   03:06:56  (  69.99, 127.95)   49.84                70
 05/09/2023   14:20:45   (  70.62, -39.86) 05/09/2023   14:21:29  (  70.60, -39.89)    2.32                44
 05/09/2023   15:11:27   ( -70.53, 127.61) 05/09/2023   15:10:54  ( -70.51, 127.62)    2.08                33
 05/12/2023   02:24:14   ( -71.58, -42.30) 05/12/2023   02:25:20  ( -71.46, -39.61)   95.53                66
 05/12/2023   03:14:41   (  70.59, 126.70) 05/12/2023   03:14:57  (  70.60, 126.72)    1.74                16
 05/12/2023   04:05:23   ( -70.49, -65.83) 05/12/2023   04:04:22  ( -70.51, -65.76)    3.34                61