Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 6 20.  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)
 06/21/2023   11:42:22   ( -71.18, 178.78) 06/21/2023   11:43:33  ( -71.05, 179.79)   39.04                71
 06/21/2023   12:32:59   (  70.70, -13.11) 06/21/2023   12:33:00  (  70.69, -13.10)    2.02                 1
 06/21/2023   13:23:39   ( -70.51, 154.52) 06/21/2023   13:22:27  ( -70.52, 154.31)    7.94                72
 06/24/2023   00:36:09   ( -70.79, -14.04) 06/24/2023   00:36:58  ( -70.77, -14.00)    2.75                49
 06/24/2023   01:26:53   (  70.68, 153.44) 06/24/2023   01:26:20  (  70.67, 153.52)    3.04                33
 06/26/2023   12:39:33   (  71.54, -16.13) 06/26/2023   12:40:40  (  71.43, -13.97)   77.45                67
 06/26/2023   13:30:01   ( -70.71, 152.60) 06/26/2023   13:30:17  ( -70.73, 152.59)    2.06                16
 06/26/2023   14:20:45   (  70.61, -39.92) 06/26/2023   14:19:39  (  70.63, -39.89)    2.51                66
 06/29/2023   01:33:13   (  70.80, 151.66) 06/29/2023   01:34:10  (  70.82, 151.72)    3.17                57
 06/29/2023   02:23:55   ( -70.70, -40.86) 06/29/2023   02:23:37  ( -70.67, -40.85)    3.08                18
 07/01/2023   14:27:06   (  70.74, -41.73) 07/01/2023   14:27:30  (  70.73, -41.77)    2.23                24
 07/01/2023   15:17:48   ( -70.64, 125.76) 07/01/2023   15:16:56  ( -70.64, 125.75)    0.68                52
 07/04/2023   02:30:16   ( -70.84, -42.67) 07/04/2023   02:31:26  ( -70.84, -42.62)    1.56                70