Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 2 14.  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)
 02/15/2024   23:51:01   ( -70.18,  -1.96) 02/15/2024   23:52:12  ( -70.12,  -1.57)   16.15                71
 02/16/2024   00:41:42   (  69.90, 165.77) 02/16/2024   00:41:41  (  69.91, 165.78)    0.75                 1
 02/16/2024   01:32:23   ( -69.77, -26.71) 02/16/2024   01:31:11  ( -69.79, -26.76)    2.63                72
 02/18/2024   16:07:48   ( -69.99, 114.12) 02/18/2024   16:08:40  ( -69.98, 114.12)    1.45                52
 02/18/2024   16:58:32   (  69.88, -78.39) 02/18/2024   16:58:07  (  69.88, -78.38)    0.71                25
 02/18/2024   17:48:58   ( -68.94,  90.26) 02/18/2024   17:47:51  ( -68.98,  88.07)   87.49                67
 02/21/2024   08:24:36   ( -69.92,-129.98) 02/21/2024   08:25:04  ( -69.95,-130.02)    3.24                28
 02/21/2024   09:15:21   (  69.87,  37.42) 02/21/2024   09:14:31  (  69.84,  37.48)    3.37                50
 02/23/2024   23:50:46   (  70.12, 178.20) 02/23/2024   23:51:57  (  70.09, 178.44)   10.09                71
 02/24/2024   00:41:26   ( -69.93, -14.19) 02/24/2024   00:41:28  ( -69.92, -14.16)    1.10                 2
 02/24/2024   01:32:09   (  69.77, 153.36) 02/24/2024   01:30:56  (  69.76, 153.26)    4.24                73
 02/26/2024   16:07:33   (  69.99, -65.80) 02/26/2024   16:08:21  (  70.01, -65.77)    2.34                48
 02/26/2024   16:58:15   ( -69.89, 101.66) 02/26/2024   16:57:51  ( -69.89, 101.70)    1.56                24