Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 11 5.  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)
 11/06/2023   22:32:34   (   0.00,-137.01) (  -0.11,-137.63)   70.69                80
 11/07/2023   22:16:30   (   0.00,-137.01) (   0.89,-133.10)  445.51                80
 11/09/2023   10:38:20   (  -0.00,-137.01) (   0.30,-138.38)  155.36                80
 11/10/2023   10:16:56   (  -0.00,-137.01) (  -0.71,-133.85)  360.50                80
 11/11/2023   22:38:54   (  -0.00,-137.01) (  -0.46,-139.16)  245.51                80
 11/12/2023   22:22:51   (  -0.00,-137.00) (   0.56,-134.64)  269.94                80
 11/14/2023   10:44:39   (  -0.00,-136.99) (   0.68,-139.90)  332.38                80
 11/15/2023   10:23:16   (  -0.00,-136.98) (  -0.35,-135.38)  182.26                80
 11/16/2023   22:45:14   (   0.01,-136.95) (  -0.80,-140.70)  425.77                80
 11/17/2023   22:29:10   (   0.01,-136.94) (   0.17,-136.16)   88.43                80