Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 9 24.  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)
 09/25/2025   22:37:09   (  70.09,-162.97) 09/25/2025   22:38:01  (  70.11,-162.99)    2.16                52
 09/25/2025   23:27:51   ( -70.02,   4.45) 09/25/2025   23:27:31  ( -70.00,   4.48)    3.15                20
 09/26/2025   00:18:19   (  69.04, 173.19) 09/26/2025   00:17:12  (  69.12, 170.94)   89.49                67
 09/28/2025   14:54:02   (  70.10, -47.20) 09/28/2025   14:54:30  (  70.08, -47.15)    2.76                28
 09/28/2025   15:44:43   ( -69.98, 120.31) 09/28/2025   15:44:00  ( -69.97, 120.33)    1.21                43
 10/01/2025   06:20:16   ( -70.51, -99.37) 10/01/2025   06:21:27  ( -70.39, -98.46)   36.35                71
 10/01/2025   07:10:54   (  70.06,  68.64) 10/01/2025   07:10:58  (  70.06,  68.72)    2.94                 4
 10/01/2025   08:01:35   ( -69.94,-123.86) 10/01/2025   08:00:28  ( -69.95,-123.80)    2.63                67
 10/03/2025   22:37:01   ( -70.12,  17.03) 10/03/2025   22:37:59  ( -70.12,  17.04)    0.80                58
 10/03/2025   23:27:45   (  69.98,-175.46) 10/03/2025   23:27:26  (  70.01,-175.47)    3.09                19
 10/04/2025   00:18:15   ( -69.28,  -7.11) 10/04/2025   00:17:06  ( -69.35,  -8.73)   64.30                69
 10/06/2025   14:53:52   ( -70.10, 132.84) 10/06/2025   14:54:25  ( -70.09, 132.89)    2.50                33
 10/06/2025   15:44:36   (  69.97, -59.65) 10/06/2025   15:43:52  (  69.97, -59.63)    1.16                44