Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 11 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)
 11/03/2023   10:50:41   (   0.00,-137.00) (   0.99,-141.36)  496.66                80
 11/04/2023   10:29:18   (   0.00,-137.00) (  -0.06,-136.84)   18.77                80
 11/06/2023   22:32:33   (  -0.00,-136.98) (  -0.15,-137.62)   72.97                80
 11/07/2023   22:16:30   (  -0.00,-136.98) (   0.85,-133.10)  442.11                80
 11/09/2023   10:38:20   (   0.00,-136.97) (   0.30,-138.38)  160.54                80
 11/10/2023   10:16:57   (   0.00,-136.96) (  -0.71,-133.85)  354.22                80
 11/11/2023   22:38:55   (  -0.01,-136.94) (  -0.48,-139.16)  253.32                80
 11/12/2023   22:22:51   (  -0.01,-136.92) (   0.53,-134.64)  261.12                80
 11/14/2023   10:44:41   (   0.02,-136.90) (   0.67,-139.91)  342.78                80
 11/15/2023   10:23:17   (   0.02,-136.88) (  -0.34,-135.38)  170.93                80
 11/16/2023   22:45:15   (  -0.03,-136.84) (  -0.89,-140.69)  438.55                80