Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 4 24.  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)
 04/25/2024   06:44:29   ( -70.10,-105.11) 04/25/2024   06:45:36  ( -70.11,-105.09)    1.57                67
 04/25/2024   07:35:13   (  69.99,  62.37) 04/25/2024   07:35:03  (  70.00,  62.40)    1.94                10
 04/25/2024   08:25:49   ( -69.58,-129.70) 04/25/2024   08:24:37  ( -69.66,-130.43)   29.66                72
 04/27/2024   23:01:22   ( -70.04,  10.76) 04/27/2024   23:01:58  ( -70.03,  10.70)    2.54                36
 04/27/2024   23:52:06   (  69.93, 178.23) 04/27/2024   23:51:25  (  69.91, 178.19)    2.65                41
 04/30/2024   14:27:34   (  70.20, -41.03) 04/30/2024   14:28:46  (  70.15, -40.84)    9.48                72
 04/30/2024   15:18:14   ( -70.00, 126.60) 04/30/2024   15:18:17  ( -69.98, 126.56)    2.67                 3
 04/30/2024   16:08:57   (  69.84, -65.85) 04/30/2024   16:07:44  (  69.86, -65.96)    4.79                73
 05/03/2024   06:44:25   (  70.08,  74.94) 05/03/2024   06:45:05  (  70.09,  75.00)    2.23                40
 05/03/2024   07:35:07   ( -69.99,-117.59) 05/03/2024   07:34:35  ( -69.98,-117.53)    2.62                32
 05/05/2024   22:10:40   ( -70.51,  22.76) 05/05/2024   22:11:51  ( -70.41,  23.74)   38.08                71
 05/05/2024   23:01:17   (  70.04,-169.20) 05/05/2024   23:01:23  (  70.01,-169.19)    2.63                 6
 05/05/2024   23:51:58   ( -69.88,  -1.65) 05/05/2024   23:50:53  ( -69.90,  -1.71)    2.95                65