Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 8 15.  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)
 08/16/2025   22:37:25   ( -70.07,  17.00) 08/16/2025   22:37:52  ( -70.07,  16.96)    1.34                27
 08/16/2025   23:28:09   (  69.98,-175.56) 08/16/2025   23:27:19  (  69.96,-175.53)    2.24                50
 08/19/2025   14:03:39   (  70.25, -34.82) 08/19/2025   14:04:51  (  70.20, -34.59)    9.81                72
 08/19/2025   14:54:19   ( -70.02, 132.85) 08/19/2025   14:54:22  ( -70.04, 132.81)    2.59                 3
 08/19/2025   15:45:02   (  69.88, -59.64) 08/19/2025   15:43:50  (  69.88, -59.77)    5.26                72
 08/22/2025   06:20:31   (  70.10,  81.18) 08/22/2025   06:21:22  (  70.10,  81.15)    1.50                51
 08/22/2025   07:11:13   ( -69.97,-111.31) 08/22/2025   07:10:52  ( -69.99,-111.37)    3.19                21
 08/22/2025   08:01:40   (  68.99,  57.42) 08/22/2025   08:00:34  (  69.06,  55.01)   96.35                66
 08/24/2025   22:37:24   (  70.06,-162.98) 08/24/2025   22:37:51  (  70.04,-163.06)    3.63                27
 08/24/2025   23:28:07   ( -69.99,   4.44) 08/24/2025   23:27:20  ( -69.99,   4.50)    2.41                47
 08/27/2025   14:03:39   ( -70.36, 145.00) 08/27/2025   14:04:50  ( -70.29, 145.54)   21.86                71
 08/27/2025   14:54:18   (  70.02, -47.16) 08/27/2025   14:54:20  (  70.01, -47.21)    2.17                 2
 08/27/2025   15:45:00   ( -69.90, 120.35) 08/27/2025   15:43:50  ( -69.91, 120.28)    2.97                70