Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 9 3.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-9) LANDSAT-9 Lat/Lon    Distance(km)  Time Diff(sec)
 09/05/2025   22:12:03   (  70.29,-156.98) 09/05/2025   22:13:14  (  70.23,-156.62)   15.04                71
 09/05/2025   23:02:42   ( -70.03,  10.74) 09/05/2025   23:02:46  ( -70.01,  10.70)    2.61                 4
 09/05/2025   23:53:26   (  69.92, 178.20) 09/05/2025   23:52:13  (  69.91, 178.20)    1.96                73
 09/08/2025   14:28:52   (  70.08, -40.89) 09/08/2025   14:29:45  (  70.11, -40.91)    3.12                53
 09/08/2025   15:19:34   ( -69.98, 126.59) 09/08/2025   15:19:15  ( -70.00, 126.56)    2.11                19
 09/08/2025   16:10:03   (  69.08, -64.80) 09/08/2025   16:08:56  (  69.12, -66.98)   86.58                67
 09/11/2025   06:45:45   (  70.04,  74.95) 09/11/2025   06:46:15  (  70.06,  74.90)    2.51                30
 09/11/2025   07:36:27   ( -69.94,-117.58) 09/11/2025   07:35:45  ( -69.95,-117.62)    1.69                42
 09/13/2025   22:12:01   ( -70.49,  22.73) 09/13/2025   22:13:12  ( -70.41,  23.65)   35.27                71
 09/13/2025   23:02:38   (  70.01,-169.23) 09/13/2025   23:02:44  (  70.02,-169.26)    1.67                 6
 09/13/2025   23:53:20   ( -69.92,  -1.76) 09/13/2025   23:52:14  ( -69.92,  -1.78)    0.68                66
 09/16/2025   14:28:47   ( -70.10, 139.11) 09/16/2025   14:29:45  ( -70.12, 139.12)    2.50                58
 09/16/2025   15:19:31   (  70.00, -53.42) 09/16/2025   15:19:12  (  70.01, -53.39)    1.86                19