Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 8 8.  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)
 08/08/2025   21:47:00   ( -71.07,  28.07) 08/08/2025   21:48:06  ( -70.99,  30.70)   95.73                66
 08/08/2025   22:37:27   (  70.10,-163.05) 08/08/2025   22:37:48  (  70.07,-163.02)    3.22                21
 08/08/2025   23:28:09   ( -69.98,   4.45) 08/08/2025   23:27:18  ( -69.96,   4.45)    2.41                51
 08/11/2025   14:03:39   ( -70.22, 145.22) 08/11/2025   14:04:51  ( -70.20, 145.39)    7.20                72
 08/11/2025   14:54:20   (  70.03, -47.18) 08/11/2025   14:54:18  (  70.04, -47.19)    0.48                 2
 08/11/2025   15:45:02   ( -69.91, 120.32) 08/11/2025   15:43:48  ( -69.93, 120.29)    2.12                74
 08/14/2025   06:20:31   ( -70.11, -98.83) 08/14/2025   06:21:22  ( -70.10, -98.87)    1.88                51
 08/14/2025   07:11:14   (  69.97,  68.68) 08/14/2025   07:10:49  (  69.99,  68.62)    2.68                25
 08/14/2025   08:01:40   ( -69.00,-122.60) 08/14/2025   08:00:34  ( -69.06,-125.00)   95.72                66
 08/16/2025   22:37:26   ( -70.10,  16.95) 08/16/2025   22:37:52  ( -70.09,  17.00)    2.46                26
 08/16/2025   23:28:09   (  69.97,-175.55) 08/16/2025   23:27:19  (  69.98,-175.51)    1.32                50
 08/19/2025   14:03:40   (  70.28, -34.88) 08/19/2025   14:04:51  (  70.22, -34.57)   13.82                71
 08/19/2025   14:54:20   ( -70.05, 132.80) 08/19/2025   14:54:22  ( -70.06, 132.84)    2.41                 2
 08/19/2025   15:45:03   (  69.92, -59.70) 08/19/2025   15:43:49  (  69.95, -59.67)    3.36                74