Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 10 29.  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)
 10/30/2025   14:53:20   (  70.28, -47.28) 10/30/2025   14:54:31  (  70.22, -46.96)   13.25                71
 10/30/2025   15:43:59   ( -70.06, 120.38) 10/30/2025   15:44:02  ( -70.06, 120.43)    2.11                 3
 10/30/2025   16:34:43   (  69.92, -72.10) 10/30/2025   16:33:30  (  69.90, -72.14)    2.90                73
 11/02/2025   07:10:07   (  70.11,  68.78) 11/02/2025   07:11:03  (  70.10,  68.73)    2.06                56
 11/02/2025   08:00:48   ( -69.99,-123.72) 11/02/2025   08:00:33  ( -69.99,-123.78)    2.50                15
 11/02/2025   08:51:20   (  69.21,  44.72) 11/02/2025   08:50:12  (  69.22,  42.82)   75.06                68
 11/04/2025   23:26:57   (  70.10,-175.42) 11/04/2025   23:27:32  (  70.11,-175.37)    1.81                35
 11/05/2025   00:17:38   ( -69.98,  -7.91) 11/05/2025   00:17:02  ( -70.00,  -7.89)    2.75                36
 11/07/2025   14:53:15   ( -70.91, 131.78) 11/07/2025   14:54:22  ( -70.80, 133.89)   77.76                67
 11/07/2025   15:43:45   (  70.05, -59.54) 11/07/2025   15:44:01  (  70.03, -59.59)    2.88                16
 11/07/2025   16:34:26   ( -69.92, 107.97) 11/07/2025   16:33:31  ( -69.93, 107.89)    2.99                55
 11/10/2025   07:09:51   ( -70.18,-111.25) 11/10/2025   07:11:02  ( -70.15,-111.18)    3.78                71
 11/10/2025   08:00:34   (  70.01,  56.31) 11/10/2025   08:00:29  (  70.04,  56.30)    3.03                 5
 11/10/2025   08:51:14   ( -69.82,-136.08) 11/10/2025   08:50:00  ( -69.88,-136.29)   10.21                74