Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 3 6.  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)
 03/06/2023   22:30:14   (   0.01,-137.00) (   0.22,-136.12)  100.69                80
 03/08/2023   10:52:01   (  -0.01,-137.01) (   0.94,-141.39)  499.04                80
 03/09/2023   10:33:16   (  -0.01,-137.01) (  -0.05,-136.86)   17.19                80
 03/11/2023   22:33:45   (   0.01,-136.98) (  -0.16,-137.62)   73.31                80
 03/12/2023   22:17:41   (   0.01,-136.98) (   0.90,-133.10)  442.26                80
 03/14/2023   10:36:47   (  -0.02,-136.97) (   0.30,-138.36)  159.39                80
 03/15/2023   10:20:42   (  -0.02,-136.95) (  -0.70,-133.83)  355.41                80
 03/16/2023   22:39:57   (   0.02,-136.91) (  -0.47,-139.14)  253.09                80
 03/17/2023   22:23:52   (   0.03,-136.90) (   0.54,-134.60)  261.42                80
 03/19/2023   10:42:58   (  -0.03,-136.88) (   0.65,-139.87)  341.23                80