Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2025 9 18.  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)
 09/20/2025   18:18:30   ( -74.34,  73.63) 09/20/2025   18:18:51  ( -74.34,  73.69)    1.94                21
 09/20/2025   19:09:14   (  74.24,-118.81) 09/20/2025   19:08:10  (  74.24,-118.85)    1.57                64
 09/23/2025   04:40:10   (  74.34,  98.22) 09/23/2025   04:40:21  (  74.35,  98.29)    2.75                11
 09/23/2025   05:30:52   ( -74.25, -94.24) 09/23/2025   05:29:44  ( -74.25, -94.29)    1.34                68
 09/25/2025   14:11:17   (  74.97, -46.23) 09/25/2025   14:12:23  (  74.90, -43.49)   79.50                66
 09/25/2025   15:01:48   ( -74.35, 122.77) 09/25/2025   15:01:55  ( -74.34, 122.82)    2.35                 7
 09/25/2025   15:52:28   (  74.05, -69.17) 09/25/2025   15:51:16  (  74.13, -69.97)   25.73                72
 09/28/2025   00:32:50   ( -74.80, -21.15) 09/28/2025   00:33:59  ( -74.72, -19.39)   52.29                69
 09/28/2025   01:23:27   (  74.36, 147.34) 09/28/2025   01:23:23  (  74.36, 147.45)    3.50                 4
 09/28/2025   02:14:01   ( -73.88, -44.15) 09/28/2025   02:12:52  ( -73.94, -45.82)   51.83                69
 09/30/2025   10:54:22   (  74.42,   4.45) 09/30/2025   10:55:34  (  74.42,   4.48)    1.08                72
 09/30/2025   11:45:04   ( -74.34, 171.99) 09/30/2025   11:44:56  ( -74.36, 172.02)    3.28                 8
 10/02/2025   21:15:59   ( -74.40,  29.09) 10/02/2025   21:17:07  ( -74.40,  29.01)    2.49                68