Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2024 4 3.  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)
 04/03/2024   22:39:38   (   0.00,-137.00) (  -0.49,-139.19)  249.76                80
 04/04/2024   22:23:34   (   0.00,-137.00) (   0.50,-134.65)  266.58                80
 04/06/2024   10:45:22   (  -0.00,-137.00) (   0.68,-139.92)  334.13                80
 04/07/2024   10:23:58   (  -0.00,-136.99) (  -0.37,-135.40)  182.06                80
 04/08/2024   22:45:55   (   0.00,-136.99) (  -0.85,-140.69)  422.93                80
 04/09/2024   22:29:51   (   0.00,-136.98) (   0.21,-136.17)   92.98                80
 04/12/2024   10:32:55   (  -0.00,-136.96) (  -0.03,-136.91)    6.88                80
 04/14/2024   22:33:27   (   0.00,-136.93) (  -0.17,-137.67)   84.79                80
 04/15/2024   22:17:22   (   0.01,-136.92) (   0.84,-133.14)  430.16                80