Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 3 9.  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)
 03/09/2023   10:30:36   (  -0.00,-137.01) (  -0.06,-136.86)   17.44                80
 03/11/2023   22:33:45   (   0.00,-136.99) (  -0.14,-137.63)   72.02                80
 03/12/2023   22:17:40   (   0.00,-136.98) (   0.87,-133.09)  443.68                80
 03/14/2023   10:39:26   (  -0.00,-136.97) (   0.32,-138.36)  158.26                80
 03/15/2023   10:18:01   (  -0.00,-136.96) (  -0.70,-133.82)  356.76                80
 03/16/2023   22:39:56   (   0.01,-136.93) (  -0.46,-139.13)  250.67                80
 03/17/2023   22:23:50   (   0.01,-136.91) (   0.51,-134.59)  264.11                80
 03/19/2023   10:42:56   (  -0.01,-136.89) (   0.66,-139.86)  338.78                80
 03/20/2023   10:26:50   (  -0.01,-136.87) (  -0.38,-135.33)  175.97                80
 03/21/2023   22:46:04   (   0.01,-136.83) (  -0.86,-140.61)  431.68                80
 03/22/2023   22:29:58   (   0.01,-136.81) (   0.18,-136.09)   83.07                80