Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2024 4 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-18)   GOES-18 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 04/17/2024   10:39:11   (   0.01,-137.01) (   0.32,-138.41)  159.54                80
 04/18/2024   10:17:46   (   0.01,-137.01) (  -0.69,-133.88)  357.03                80
 04/19/2024   22:42:23   (  -0.01,-136.99) (  -0.50,-139.18)  248.49                80
 04/20/2024   22:20:58   (  -0.01,-136.99) (   0.52,-134.64)  267.87                80
 04/22/2024   10:45:27   (   0.01,-137.00) (   0.63,-139.92)  331.55                80
 04/23/2024   10:24:01   (   0.01,-137.00) (  -0.33,-135.37)  184.46                80
 04/24/2024   22:48:37   (  -0.01,-136.97) (  -0.84,-140.67)  422.17                80
 04/25/2024   22:29:53   (   0.01,-136.96) (   0.19,-136.14)   92.97                80
 04/28/2024   10:32:56   (  -0.00,-136.93) (  -0.02,-136.88)    6.87                80