Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 6 12.  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)
 06/13/2025   21:46:38   (  70.83,-151.45) 06/13/2025   21:47:46  (  70.74,-149.68)   65.82                68
 06/13/2025   22:37:07   ( -70.09,  17.05) 06/13/2025   22:37:26  ( -70.08,  16.99)    2.53                19
 06/13/2025   23:27:52   (  69.99,-175.50) 06/13/2025   23:26:53  (  69.98,-175.51)    1.65                59
 06/16/2025   14:03:22   (  70.15, -34.61) 06/16/2025   14:04:28  (  70.15, -34.67)    2.49                66
 06/16/2025   14:54:03   ( -70.04, 132.89) 06/16/2025   14:53:58  ( -70.04, 132.81)    2.87                 5
 06/16/2025   15:44:41   (  69.57, -59.11) 06/16/2025   15:43:30  (  69.66, -60.08)   38.53                71
 06/19/2025   06:20:19   (  70.16,  81.14) 06/19/2025   06:20:59  (  70.14,  81.20)    3.07                40
 06/19/2025   07:11:00   ( -70.05,-111.36) 06/19/2025   07:10:29  ( -70.04,-111.31)    1.93                31
 06/21/2025   21:46:43   ( -70.94,  28.34) 06/21/2025   21:47:51  ( -70.84,  30.46)   78.15                68
 06/21/2025   22:37:13   (  70.07,-162.96) 06/21/2025   22:37:30  (  70.07,-163.03)    2.66                17
 06/21/2025   23:27:54   ( -69.95,   4.55) 06/21/2025   23:27:00  ( -69.97,   4.47)    3.73                54
 06/24/2025   14:03:25   ( -70.17, 145.35) 06/24/2025   14:04:34  ( -70.15, 145.32)    2.80                69
 06/24/2025   14:54:09   (  70.04, -47.14) 06/24/2025   14:54:01  (  70.03, -47.20)    2.26                 8
 06/24/2025   15:44:46   ( -69.70, 120.68) 06/24/2025   15:43:34  ( -69.77, 120.07)   24.86                72