Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 1 29.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-9) LANDSAT-9 Lat/Lon    Distance(km)  Time Diff(sec)
 01/30/2024   23:51:19   ( -69.99,  -1.77) 01/30/2024   23:52:17  ( -70.00,  -1.73)    2.58                58
 01/31/2024   00:42:03   (  69.86, 165.72) 01/31/2024   00:41:45  (  69.85, 165.70)    1.69                18
 01/31/2024   01:32:34   ( -69.20, -26.00) 01/31/2024   01:31:24  ( -69.24, -27.49)   58.59                70
 02/02/2024   16:08:10   ( -69.93, 114.10) 02/02/2024   16:08:48  ( -69.95, 114.07)    2.02                38
 02/02/2024   16:58:55   (  69.86, -78.49) 02/02/2024   16:58:15  (  69.84, -78.43)    3.19                40
 02/05/2024   07:34:31   (  70.60,  61.52) 02/05/2024   07:35:40  (  70.46,  63.05)   58.89                69
 02/05/2024   08:25:01   ( -69.89,-130.05) 02/05/2024   08:25:18  ( -69.91,-130.11)    3.40                17
 02/05/2024   09:15:46   (  69.82,  37.36) 02/05/2024   09:14:45  (  69.80,  37.39)    2.39                61
 02/07/2024   23:51:11   (  69.99, 178.27) 02/07/2024   23:52:17  (  70.00, 178.26)    0.64                66
 02/08/2024   00:41:53   ( -69.90, -14.28) 02/08/2024   00:41:47  ( -69.89, -14.26)    2.11                 6
 02/08/2024   01:32:30   (  69.42, 153.74) 02/08/2024   01:31:19  (  69.50, 152.86)   35.45                71
 02/10/2024   16:08:01   (  69.97, -65.91) 02/10/2024   16:08:44  (  69.99, -65.86)    3.24                43
 02/10/2024   16:58:42   ( -69.83, 101.62) 02/10/2024   16:58:15  ( -69.83, 101.54)    2.92                27