Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2024 4 14.  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)
 04/14/2024   22:33:27   (   0.00,-136.98) (  -0.18,-137.67)   79.13                80
 04/15/2024   22:17:23   (   0.00,-136.97) (   0.89,-133.15)  436.44                80
 04/17/2024   10:39:11   (   0.00,-136.96) (   0.34,-138.40)  164.51                80
 04/18/2024   10:17:46   (   0.00,-136.95) (  -0.67,-133.87)  350.92                80
 04/19/2024   22:42:22   (  -0.00,-136.93) (  -0.52,-139.17)  255.96                80
 04/20/2024   22:23:38   (   0.00,-136.92) (   0.50,-134.64)  259.29                80
 04/22/2024   10:42:46   (  -0.00,-136.91) (   0.66,-139.91)  342.28                80
 04/23/2024   10:26:42   (  -0.00,-136.89) (  -0.36,-135.38)  172.56                80
 04/24/2024   22:45:57   (   0.01,-136.85) (  -0.87,-140.67)  435.57                80
 04/25/2024   22:29:53   (   0.02,-136.83) (   0.16,-136.14)   78.59                80