Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 9 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)
 10/01/2025   06:20:15   ( -70.49, -99.33) 10/01/2025   06:21:26  ( -70.41, -98.43)   34.47                71
 10/01/2025   07:10:53   (  70.03,  68.68) 10/01/2025   07:10:58  (  70.03,  68.67)    0.52                 5
 10/01/2025   08:01:34   ( -69.92,-123.82) 10/01/2025   08:00:28  ( -69.92,-123.86)    1.41                66
 10/03/2025   22:37:01   ( -70.15,  16.98) 10/03/2025   22:37:58  ( -70.13,  17.05)    3.36                57
 10/03/2025   23:27:45   (  70.01,-175.50) 10/03/2025   23:27:25  (  70.02,-175.45)    2.53                20
 10/04/2025   00:18:15   ( -69.31,  -7.16) 10/04/2025   00:17:05  ( -69.36,  -8.72)   61.81                70
 10/06/2025   14:53:52   ( -70.09, 132.86) 10/06/2025   14:54:25  ( -70.09, 132.88)    0.78                33
 10/06/2025   15:44:36   (  69.95, -59.62) 10/06/2025   15:43:52  (  69.98, -59.63)    3.22                44
 10/09/2025   06:20:07   (  70.42,  80.82) 10/09/2025   06:21:18  (  70.33,  81.50)   27.24                71
 10/09/2025   07:10:42   ( -70.03,-111.27) 10/09/2025   07:10:50  ( -70.05,-111.26)    2.25                 8
 10/09/2025   08:01:27   (  69.95,  56.16) 10/09/2025   08:00:17  (  69.94,  56.22)    2.57                70
 10/11/2025   22:36:52   (  70.11,-162.93) 10/11/2025   22:37:46  (  70.09,-162.95)    2.95                54
 10/11/2025   23:27:33   ( -70.00,   4.57) 10/11/2025   23:27:16  ( -69.98,   4.53)    2.05                17
 10/12/2025   00:18:03   (  69.12, 173.16) 10/12/2025   00:16:56  (  69.15, 171.05)   83.52                67