Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 10 11.  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)
 10/11/2025   22:36:53   (  70.15,-162.99) 10/11/2025   22:38:03  (  70.16,-162.92)    2.70                70
 10/11/2025   23:27:34   ( -70.05,   4.50) 10/11/2025   23:27:33  ( -70.05,   4.55)    2.10                 1
 10/12/2025   00:18:15   (  69.74, 172.26) 10/12/2025   00:17:03  (  69.78, 171.82)   17.64                72
 10/14/2025   14:53:43   (  70.12, -47.16) 10/14/2025   14:54:32  (  70.12, -47.11)    1.96                49
 10/14/2025   15:44:24   ( -70.02, 120.33) 10/14/2025   15:44:02  ( -70.01, 120.37)    1.85                22
 10/14/2025   16:34:51   (  68.96, -70.85) 10/14/2025   16:33:45  (  69.01, -73.32)   98.79                66
 10/17/2025   07:10:33   (  70.05,  68.75) 10/17/2025   07:11:02  (  70.04,  68.67)    3.05                29
 10/17/2025   08:01:15   ( -69.99,-123.85) 10/17/2025   08:00:31  ( -69.99,-123.77)    2.89                44
 10/19/2025   22:36:47   ( -70.54,  16.45) 10/19/2025   22:37:58  ( -70.44,  17.48)   39.91                71
 10/19/2025   23:27:24   (  70.04,-175.45) 10/19/2025   23:27:30  (  70.05,-175.43)    1.71                 6
 10/20/2025   00:18:05   ( -69.92,  -7.96) 10/20/2025   00:17:00  ( -69.95,  -7.94)    2.67                65
 10/22/2025   14:53:30   ( -70.12, 132.92) 10/22/2025   14:54:32  ( -70.10, 132.87)    2.63                62
 10/22/2025   15:44:14   (  69.98, -59.57) 10/22/2025   15:43:59  (  69.98, -59.64)    2.70                15
 10/22/2025   16:34:47   ( -69.44, 108.54) 10/22/2025   16:33:36  ( -69.50, 107.32)   48.12                71