Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 8 4.  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)
 08/06/2025   06:20:32   (  70.09,  81.19) 08/06/2025   06:21:17  (  70.10,  81.14)    1.75                45
 08/06/2025   07:11:14   ( -69.98,-111.32) 08/06/2025   07:10:47  ( -69.99,-111.38)    2.74                27
 08/08/2025   21:47:00   ( -71.10,  28.01) 08/08/2025   21:48:05  ( -71.01,  30.74)   98.97                65
 08/08/2025   22:37:26   (  70.08,-163.02) 08/08/2025   22:37:47  (  70.09,-163.00)    1.14                21
 08/08/2025   23:28:08   ( -69.96,   4.48) 08/08/2025   23:27:17  ( -69.98,   4.49)    2.43                51
 08/11/2025   14:03:39   ( -70.26, 145.17) 08/11/2025   14:04:50  ( -70.22, 145.43)   10.62                71
 08/11/2025   14:54:21   (  70.07, -47.24) 08/11/2025   14:54:18  (  70.06, -47.16)    3.45                 3
 08/11/2025   15:45:02   ( -69.89, 120.35) 08/11/2025   15:43:49  ( -69.90, 120.25)    3.80                73
 08/14/2025   06:20:32   ( -70.14, -98.89) 08/14/2025   06:21:22  ( -70.12, -98.84)    3.12                50
 08/14/2025   07:11:15   (  70.01,  68.62) 08/14/2025   07:10:49  (  70.01,  68.65)    1.41                26
 08/14/2025   08:01:41   ( -69.04,-122.65) 08/14/2025   08:00:34  ( -69.08,-124.97)   92.24                67
 08/16/2025   22:37:26   ( -70.09,  16.97) 08/16/2025   22:37:53  ( -70.06,  16.96)    3.01                27
 08/16/2025   23:28:09   (  69.96,-175.53) 08/16/2025   23:27:20  (  69.94,-175.56)    2.24                49