Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 4 12.  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)
 04/14/2024   15:18:18   ( -70.02, 126.53) 04/14/2024   15:18:56  ( -70.04, 126.52)    2.75                38
 04/14/2024   16:09:02   (  69.91, -66.00) 04/14/2024   16:08:23  (  69.93, -65.99)    2.33                39
 04/17/2024   06:44:38   (  70.44,  74.33) 04/17/2024   06:45:49  (  70.33,  75.18)   34.17                71
 04/17/2024   07:35:14   ( -70.02,-117.70) 04/17/2024   07:35:23  ( -70.00,-117.65)    2.77                 9
 04/17/2024   08:25:57   (  69.86,  49.84) 04/17/2024   08:24:50  (  69.89,  49.84)    2.85                67
 04/19/2024   23:01:26   (  70.03,-169.26) 04/19/2024   23:02:20  (  70.04,-169.34)    3.11                54
 04/19/2024   23:52:07   ( -69.93,  -1.79) 04/19/2024   23:51:49  ( -69.94,  -1.85)    2.75                18
 04/20/2024   00:42:36   (  69.03, 166.82) 04/20/2024   00:41:29  (  69.10, 164.67)   85.94                67
 04/22/2024   15:18:20   (  70.01, -53.45) 04/22/2024   15:18:45  (  70.00, -53.51)    2.38                25
 04/22/2024   16:09:02   ( -69.90, 114.03) 04/22/2024   16:08:15  ( -69.90, 113.98)    1.94                47
 04/25/2024   06:44:32   ( -70.14,-105.18) 04/25/2024   06:45:43  ( -70.11,-105.11)    3.55                71
 04/25/2024   07:35:15   (  69.99,  62.36) 04/25/2024   07:35:10  (  69.99,  62.37)    0.89                 5
 04/25/2024   08:25:55   ( -69.77,-130.00) 04/25/2024   08:24:41  ( -69.84,-130.21)   11.05                74