Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2024 4 6.  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)
 04/07/2024   22:36:09   ( -70.57,  16.23) 04/07/2024   22:37:19  ( -70.43,  17.39)   45.68                70
 04/07/2024   23:26:44   (  69.99,-175.55) 04/07/2024   23:26:52  (  70.00,-175.59)    1.73                 8
 04/08/2024   00:17:26   ( -69.90,  -8.09) 04/08/2024   00:16:22  ( -69.89,  -8.11)    1.17                64
 04/10/2024   14:52:56   ( -70.08, 132.77) 04/10/2024   14:53:54  ( -70.06, 132.72)    3.06                58
 04/10/2024   15:43:40   (  69.98, -59.76) 04/10/2024   15:43:21  (  69.95, -59.78)    2.78                19
 04/10/2024   16:34:10   ( -69.24, 108.64) 04/10/2024   16:33:01  ( -69.29, 106.96)   66.43                69
 04/13/2024   07:09:51   ( -70.07,-111.43) 04/13/2024   07:10:21  ( -70.05,-111.42)    2.45                30
 04/13/2024   08:00:34   (  69.91,  56.11) 04/13/2024   07:59:48  (  69.94,  56.07)    2.96                46
 04/15/2024   22:36:06   (  70.22,-163.21) 04/15/2024   22:37:18  (  70.17,-163.00)   10.01                72
 04/15/2024   23:26:46   ( -70.01,   4.43) 04/15/2024   23:26:49  ( -70.01,   4.41)    0.75                 3
 04/16/2024   00:17:29   (  69.86, 171.97) 04/16/2024   00:16:16  (  69.90, 171.90)    5.29                73
 04/18/2024   14:53:00   (  70.12, -47.28) 04/18/2024   14:53:46  (  70.11, -47.20)    3.07                46
 04/18/2024   15:43:41   ( -69.96, 120.28) 04/18/2024   15:43:17  ( -69.95, 120.21)    2.89                24