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) (   0.30,-138.41)  159.51                80
 04/18/2024   10:17:46   (   0.01,-137.01) (  -0.66,-133.87)  357.12                80
 04/19/2024   22:42:22   (  -0.01,-136.99) (  -0.52,-139.17)  248.37                80
 04/20/2024   22:20:58   (  -0.01,-136.99) (   0.50,-134.64)  268.05                80
 04/22/2024   10:45:26   (   0.01,-137.00) (   0.64,-139.91)  331.29                80
 04/23/2024   10:24:00   (   0.01,-137.00) (  -0.33,-135.37)  184.77                80
 04/24/2024   22:48:37   (  -0.01,-136.97) (  -0.83,-140.67)  421.77                80
 04/25/2024   22:29:52   (   0.01,-136.96) (   0.21,-136.14)   93.46                80
 04/28/2024   10:32:54   (  -0.00,-136.93) (  -0.01,-136.87)    7.58                80