Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2024 4 19.  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)
 04/21/2024   06:19:24   ( -70.94,-100.14) 04/21/2024   06:20:31  ( -70.82, -97.91)   82.46                67
 04/21/2024   07:09:53   (  70.05,  68.60) 04/21/2024   07:10:10  (  70.06,  68.62)    0.93                17
 04/21/2024   08:00:35   ( -69.95,-123.93) 04/21/2024   07:59:40  ( -69.94,-123.91)    1.53                55
 04/23/2024   22:36:02   ( -70.11,  16.97) 04/23/2024   22:37:07  ( -70.09,  16.92)    3.35                65
 04/23/2024   23:26:46   (  70.01,-175.55) 04/23/2024   23:26:33  (  70.03,-175.52)    3.13                13
 04/24/2024   00:17:21   ( -69.54,  -7.54) 04/24/2024   00:16:09  ( -69.59,  -8.50)   37.52                72
 04/26/2024   14:52:56   ( -70.09, 132.80) 04/26/2024   14:53:30  ( -70.06, 132.78)    2.53                34
 04/26/2024   15:43:40   (  69.98, -59.74) 04/26/2024   15:42:56  (  70.00, -59.66)    3.57                44
 04/29/2024   06:19:09   (  70.23,  81.03) 04/29/2024   06:20:21  (  70.19,  81.23)    8.78                72
 04/29/2024   07:09:49   ( -70.02,-111.33) 04/29/2024   07:09:52  ( -70.03,-111.37)    1.47                 3
 04/29/2024   08:00:32   (  69.87,  56.21) 04/29/2024   07:59:19  (  69.91,  56.11)    5.83                73
 05/01/2024   22:36:00   (  70.09,-162.96) 05/01/2024   22:36:43  (  70.09,-163.00)    1.78                43
 05/01/2024   23:26:42   ( -69.98,   4.52) 05/01/2024   23:26:13  ( -69.99,   4.49)    1.43                29