Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 11 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)
 12/01/2025   14:53:59   (  70.08, -47.12) 12/01/2025   14:54:32  (  70.08, -47.17)    2.22                33
 12/01/2025   15:44:41   ( -69.97, 120.36) 12/01/2025   15:44:02  ( -69.96, 120.30)    2.50                39
 12/04/2025   06:20:19   ( -70.39, -99.15) 12/04/2025   06:21:30  ( -70.31, -98.60)   22.36                71
 12/04/2025   07:10:58   (  70.02,  68.72) 12/04/2025   07:11:00  (  70.04,  68.66)    2.76                 2
 12/04/2025   08:01:40   ( -69.91,-123.80) 12/04/2025   08:00:30  ( -69.93,-123.87)    3.21                70
 12/06/2025   22:37:14   ( -70.13,  17.01) 12/06/2025   22:38:00  ( -70.14,  17.04)    1.69                46
 12/06/2025   23:27:58   (  70.03,-175.54) 12/06/2025   23:27:27  (  70.03,-175.47)    2.74                31
 12/09/2025   14:03:40   (  70.73, -35.52) 12/09/2025   14:04:49  (  70.60, -34.03)   56.86                69
 12/09/2025   14:54:12   ( -70.08, 132.83) 12/09/2025   14:54:26  ( -70.11, 132.88)    3.24                14
 12/09/2025   15:44:55   (  69.94, -59.65) 12/09/2025   15:43:54  (  69.94, -59.71)    2.33                61
 12/12/2025   06:20:28   (  70.12,  81.21) 12/12/2025   06:21:23  (  70.16,  81.21)    3.42                55
 12/12/2025   07:11:11   ( -70.05,-111.36) 12/12/2025   07:10:53  ( -70.05,-111.30)    2.05                18
 12/12/2025   08:01:40   (  69.17,  57.24) 12/12/2025   08:00:33  (  69.22,  55.21)   80.34                67