Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 9 26.  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)
 09/28/2025   14:54:01   (  70.07, -47.15) 09/28/2025   14:54:30  (  70.06, -47.18)    1.59                29
 09/28/2025   15:44:42   ( -69.95, 120.35) 09/28/2025   15:44:00  ( -69.94, 120.29)    2.34                42
 10/01/2025   06:20:15   ( -70.48, -99.32) 10/01/2025   06:21:26  ( -70.42, -98.42)   34.34                71
 10/01/2025   07:10:53   (  70.03,  68.69) 10/01/2025   07:10:58  (  70.04,  68.68)    0.93                 5
 10/01/2025   08:01:34   ( -69.91,-123.81) 10/01/2025   08:00:28  ( -69.93,-123.85)    2.02                66
 10/03/2025   22:37:00   ( -70.09,  17.07) 10/03/2025   22:37:59  ( -70.09,  17.00)    2.97                59
 10/03/2025   23:27:45   (  70.01,-175.49) 10/03/2025   23:27:26  (  69.98,-175.51)    3.11                19
 10/04/2025   00:18:15   ( -69.31,  -7.15) 10/04/2025   00:17:06  ( -69.32,  -8.78)   64.20                69
 10/06/2025   14:53:52   ( -70.08, 132.88) 10/06/2025   14:54:25  ( -70.10, 132.91)    3.22                33
 10/06/2025   15:44:36   (  69.94, -59.61) 10/06/2025   15:43:53  (  69.94, -59.68)    2.78                43
 10/09/2025   06:20:06   (  70.41,  80.83) 10/09/2025   06:21:18  (  70.29,  81.45)   26.27                72
 10/09/2025   07:10:42   ( -70.02,-111.26) 10/09/2025   07:10:51  ( -70.02,-111.31)    1.96                 9
 10/09/2025   08:01:26   (  69.89,  56.25) 10/09/2025   08:00:18  (  69.91,  56.18)    3.69                68