Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 4 8.  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)
 04/09/2024   06:44:43   ( -70.87,-106.37) 04/09/2024   06:45:50  ( -70.75,-104.21)   80.14                67
 04/09/2024   07:35:12   (  69.98,  62.36) 04/09/2024   07:35:29  (  69.98,  62.32)    1.69                17
 04/09/2024   08:25:54   ( -69.88,-130.18) 04/09/2024   08:24:59  ( -69.87,-130.20)    1.08                55
 04/11/2024   23:01:23   ( -70.07,  10.68) 04/11/2024   23:02:29  ( -70.05,  10.65)    2.43                66
 04/11/2024   23:52:07   (  69.97, 178.15) 04/11/2024   23:51:56  (  69.94, 178.14)    2.95                11
 04/12/2024   00:42:42   ( -69.49, -13.84) 04/12/2024   00:41:31  ( -69.56, -14.75)   36.27                71
 04/14/2024   15:18:18   ( -70.01, 126.54) 04/14/2024   15:18:56  ( -70.04, 126.51)    3.26                38
 04/14/2024   16:09:02   (  69.91, -65.99) 04/14/2024   16:08:23  (  69.92, -66.00)    1.67                39
 04/17/2024   06:44:38   (  70.43,  74.34) 04/17/2024   06:45:49  (  70.32,  75.17)   33.49                71
 04/17/2024   07:35:14   ( -70.01,-117.69) 04/17/2024   07:35:23  ( -70.00,-117.66)    1.73                 9
 04/17/2024   08:25:57   (  69.86,  49.85) 04/17/2024   08:24:50  (  69.88,  49.82)    2.71                67
 04/19/2024   23:01:27   (  70.07,-169.33) 04/19/2024   23:02:19  (  70.08,-169.28)    2.03                52
 04/19/2024   23:52:09   ( -69.96,  -1.84) 04/19/2024   23:51:49  ( -69.99,  -1.79)    3.07                20