Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 8 30.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 09/01/2025   22:37:21   ( -70.06,  17.03) 09/01/2025   22:37:55  ( -70.07,  16.96)    2.64                34
 09/01/2025   23:28:05   (  69.96,-175.52) 09/01/2025   23:27:22  (  69.96,-175.54)    0.83                43
 09/04/2025   14:03:40   (  70.52, -35.24) 09/04/2025   14:04:51  (  70.41, -34.30)   37.49                71
 09/04/2025   14:54:15   ( -70.05, 132.82) 09/04/2025   14:54:26  ( -70.02, 132.78)    3.04                11
 09/04/2025   15:44:58   (  69.90, -59.65) 09/04/2025   15:43:53  (  69.92, -59.72)    3.61                65
 09/07/2025   06:20:26   (  70.10,  81.19) 09/07/2025   06:21:26  (  70.11,  81.16)    1.89                60
 09/07/2025   07:11:08   ( -70.00,-111.33) 09/07/2025   07:10:56  ( -70.01,-111.36)    1.87                12
 09/07/2025   08:01:41   (  69.31,  56.98) 09/07/2025   08:00:32  (  69.40,  55.45)   60.78                69
 09/09/2025   22:37:19   (  70.06,-162.96) 09/09/2025   22:37:56  (  70.06,-163.03)    2.73                37
 09/09/2025   23:28:01   ( -69.95,   4.52) 09/09/2025   23:27:26  ( -69.96,   4.46)    2.47                35
 09/12/2025   14:03:39   ( -70.75, 144.41) 09/12/2025   14:04:48  ( -70.65, 146.07)   61.87                69
 09/12/2025   14:54:11   (  70.02, -47.13) 09/12/2025   14:54:24  (  70.04, -47.18)    2.91                13
 09/12/2025   15:44:53   ( -69.92, 120.34) 09/12/2025   15:43:54  ( -69.94, 120.31)    2.87                59