Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 4 16.  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)
 04/17/2024   06:44:37   (  70.43,  74.35) 04/17/2024   06:45:48  (  70.33,  75.18)   33.06                71
 04/17/2024   07:35:13   ( -70.01,-117.69) 04/17/2024   07:35:22  ( -70.00,-117.66)    2.38                 9
 04/17/2024   08:25:57   (  69.91,  49.78) 04/17/2024   08:24:49  (  69.89,  49.83)    2.85                68
 04/19/2024   23:01:26   (  70.09,-169.34) 04/19/2024   23:02:18  (  70.06,-169.32)    3.25                52
 04/19/2024   23:52:07   ( -69.93,  -1.79) 04/19/2024   23:51:48  ( -69.95,  -1.84)    2.43                19
 04/20/2024   00:42:36   (  69.03, 166.82) 04/20/2024   00:41:29  (  69.06, 164.62)   87.72                67
 04/22/2024   15:18:20   (  70.02, -53.47) 04/22/2024   15:18:43  (  70.02, -53.47)    0.37                23
 04/22/2024   16:09:02   ( -69.92, 114.01) 04/22/2024   16:08:13  ( -69.92, 114.01)    0.36                49
 04/25/2024   06:44:31   ( -70.12,-105.15) 04/25/2024   06:45:40  ( -70.12,-105.09)    2.39                69
 04/25/2024   07:35:14   (  69.97,  62.39) 04/25/2024   07:35:07  (  70.00,  62.39)    3.43                 7
 04/25/2024   08:25:53   ( -69.71,-129.90) 04/25/2024   08:24:40  ( -69.73,-130.35)   17.68                73
 04/27/2024   23:01:24   ( -70.08,  10.69) 04/27/2024   23:02:03  ( -70.05,  10.72)    3.13                39
 04/27/2024   23:52:07   (  69.93, 178.23) 04/27/2024   23:51:30  (  69.93, 178.20)    1.39                37