Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 11 1.  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)
 11/01/2023   22:28:51   (   0.00,-137.01) (   0.20,-136.08)  105.19                80
 11/03/2023   10:50:42   (  -0.00,-137.01) (   0.95,-141.37)  496.48                80
 11/04/2023   10:29:18   (  -0.00,-137.00) (  -0.04,-136.84)   18.80                80
 11/06/2023   22:32:33   (   0.00,-136.99) (  -0.17,-137.62)   72.59                80
 11/07/2023   22:16:30   (   0.00,-136.98) (   0.89,-133.10)  442.67                80
 11/09/2023   10:38:20   (   0.00,-136.98) (   0.31,-138.38)  159.61                80
 11/10/2023   10:16:56   (   0.00,-136.97) (  -0.69,-133.85)  355.24                80
 11/11/2023   22:38:55   (  -0.00,-136.95) (  -0.50,-139.16)  252.28                80
 11/12/2023   22:22:51   (  -0.01,-136.93) (   0.52,-134.64)  262.22                80
 11/14/2023   10:44:40   (   0.01,-136.91) (   0.68,-139.91)  341.30                80