Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2024 4 4.  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)
 04/04/2024   22:23:34   (   0.00,-137.00) (   0.54,-134.66)  266.63                80
 04/06/2024   10:45:22   (  -0.00,-137.00) (   0.65,-139.93)  333.91                80
 04/07/2024   10:23:58   (  -0.00,-137.00) (  -0.34,-135.39)  182.32                80
 04/08/2024   22:45:55   (   0.00,-136.99) (  -0.82,-140.70)  422.63                80
 04/09/2024   22:29:51   (  -0.00,-136.99) (   0.18,-136.17)   93.28                80
 04/12/2024   10:30:15   (  -0.00,-136.97) (   0.00,-136.90)    7.35                80
 04/14/2024   22:33:27   (   0.01,-136.93) (  -0.15,-137.68)   84.35                80
 04/15/2024   22:17:23   (   0.01,-136.92) (   0.86,-133.14)  430.69                80
 04/17/2024   10:39:11   (  -0.01,-136.90) (   0.31,-138.41)  171.79                80