Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2024 4 13.  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) (  -0.15,-137.67)   79.02                80
 04/15/2024   22:17:23   (   0.00,-136.97) (   0.86,-133.14)  436.48                80
 04/17/2024   10:39:11   (   0.00,-136.97) (   0.32,-138.41)  164.40                80
 04/18/2024   10:17:47   (   0.00,-136.96) (  -0.69,-133.88)  351.00                80
 04/19/2024   22:42:23   (  -0.00,-136.93) (  -0.50,-139.18)  255.96                80
 04/20/2024   22:23:39   (   0.00,-136.92) (   0.51,-134.64)  259.25                80
 04/22/2024   10:42:47   (  -0.00,-136.91) (   0.66,-139.91)  342.31                80
 04/23/2024   10:26:42   (  -0.00,-136.89) (  -0.35,-135.38)  172.47                80
 04/24/2024   22:45:59   (   0.01,-136.86) (  -0.83,-140.68)  435.77                80
 04/25/2024   22:29:54   (   0.02,-136.83) (   0.19,-136.15)   78.37                80