Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 5 3.  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)
 05/03/2024   06:44:26   (  70.11,  74.90) 05/03/2024   06:45:37  (  70.12,  74.91)    1.55                71
 05/03/2024   07:35:08   ( -70.02,-117.64) 05/03/2024   07:35:07  ( -70.01,-117.62)    1.59                 1
 05/03/2024   08:25:49   (  69.75,  50.08) 05/03/2024   08:24:36  (  69.79,  49.73)   14.49                73
 05/05/2024   23:01:19   (  70.09,-169.29) 05/05/2024   23:02:05  (  70.08,-169.28)    1.44                46
 05/05/2024   23:52:00   ( -69.95,  -1.75) 05/05/2024   23:51:35  ( -69.97,  -1.80)    2.83                25
 05/08/2024   14:27:44   ( -71.08, 137.59) 05/08/2024   14:28:49  ( -70.99, 140.31)   99.07                65
 05/08/2024   15:18:10   (  70.03, -53.41) 05/08/2024   15:18:31  (  70.06, -53.42)    3.39                21
 05/08/2024   16:08:52   ( -69.94, 114.05) 05/08/2024   16:08:01  ( -69.95, 114.06)    1.60                51
 05/11/2024   06:44:19   ( -70.14,-105.10) 05/11/2024   06:45:31  ( -70.13,-105.08)    1.60                72
 05/11/2024   07:35:03   (  70.03,  62.38) 05/11/2024   07:34:58  (  70.01,  62.40)    2.27                 5
 05/11/2024   08:25:42   ( -69.78,-129.93) 05/11/2024   08:24:29  ( -69.85,-130.19)   12.95                73
 05/13/2024   23:01:11   ( -70.10,  10.75) 05/13/2024   23:01:57  ( -70.11,  10.78)    1.54                46
 05/13/2024   23:51:55   (  69.99, 178.23) 05/13/2024   23:51:24  (  69.99, 178.26)    1.20                31
 05/16/2024   14:27:34   (  70.84, -41.97) 05/16/2024   14:28:42  (  70.77, -40.00)   72.55                68
 05/16/2024   15:18:03   ( -70.06, 126.59) 05/16/2024   15:18:23  ( -70.06, 126.60)    0.41                20
 05/16/2024   16:08:47   (  69.96, -65.94) 05/16/2024   16:07:50  (  69.94, -65.92)    1.97                57