Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 6 13.  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)   65.77                68
 06/13/2025   22:37:07   ( -70.09,  17.05) 06/13/2025   22:37:26  ( -70.08,  16.99)    2.68                19
 06/13/2025   23:27:52   (  69.99,-175.49) 06/13/2025   23:26:53  (  69.98,-175.51)    1.59                59
 06/16/2025   14:03:22   (  70.15, -34.61) 06/16/2025   14:04:28  (  70.15, -34.67)    2.60                66
 06/16/2025   14:54:03   ( -70.04, 132.89) 06/16/2025   14:53:58  ( -70.04, 132.81)    2.94                 5
 06/16/2025   15:44:41   (  69.57, -59.11) 06/16/2025   15:43:30  (  69.66, -60.08)   38.56                71
 06/19/2025   06:20:19   (  70.16,  81.14) 06/19/2025   06:20:59  (  70.14,  81.20)    3.32                40
 06/19/2025   07:11:00   ( -70.05,-111.36) 06/19/2025   07:10:29  ( -70.04,-111.32)    2.14                31
 06/21/2025   21:46:43   ( -70.95,  28.34) 06/21/2025   21:47:51  ( -70.83,  30.45)   78.14                68
 06/21/2025   22:37:13   (  70.07,-162.96) 06/21/2025   22:37:30  (  70.06,-163.03)    3.08                17
 06/21/2025   23:27:55   ( -70.01,   4.46) 06/21/2025   23:26:59  ( -70.02,   4.53)    2.96                56
 06/24/2025   14:03:25   ( -70.18, 145.34) 06/24/2025   14:04:33  ( -70.19, 145.39)    2.50                68
 06/24/2025   14:54:09   (  70.04, -47.15) 06/24/2025   14:54:01  (  70.02, -47.21)    3.22                 8
 06/24/2025   15:44:46   ( -69.71, 120.68) 06/24/2025   15:43:34  ( -69.76, 120.05)   24.68                72