Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2024 4 16.  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)
 04/18/2024   14:52:58   (  70.07, -47.21) 04/18/2024   14:53:45  (  70.06, -47.27)    2.85                47
 04/18/2024   15:43:40   ( -69.97, 120.26) 04/18/2024   15:43:14  ( -70.00, 120.28)    3.17                26
 04/21/2024   06:19:24   ( -70.94,-100.13) 04/21/2024   06:20:31  ( -70.83, -97.89)   82.60                67
 04/21/2024   07:09:53   (  70.05,  68.60) 04/21/2024   07:10:10  (  70.06,  68.63)    1.56                17
 04/21/2024   08:00:35   ( -69.95,-123.93) 04/21/2024   07:59:40  ( -69.95,-123.90)    1.35                55
 04/23/2024   22:36:04   ( -70.15,  16.92) 04/23/2024   22:37:08  ( -70.14,  16.98)    2.46                64
 04/23/2024   23:26:47   (  69.99,-175.53) 04/23/2024   23:26:35  (  70.02,-175.54)    3.07                12
 04/24/2024   00:17:22   ( -69.52,  -7.52) 04/24/2024   00:16:11  ( -69.58,  -8.51)   39.32                71
 04/26/2024   14:52:58   ( -70.10, 132.77) 04/26/2024   14:53:32  ( -70.10, 132.83)    2.21                34
 04/26/2024   15:43:42   (  70.00, -59.77) 04/26/2024   15:42:59  (  69.99, -59.69)    3.14                43
 04/29/2024   06:19:12   (  70.33,  80.88) 04/29/2024   06:20:23  (  70.24,  81.29)   18.37                71
 04/29/2024   07:09:50   ( -70.01,-111.32) 04/29/2024   07:09:55  ( -70.03,-111.38)    3.08                 5
 04/29/2024   08:00:34   (  69.91,  56.14) 04/29/2024   07:59:22  (  69.90,  56.09)    2.22                72