Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 10 28.  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)
 10/29/2023   10:44:19   (  -0.00,-137.03) (   0.62,-139.82)  317.88                80
 10/30/2023   10:22:56   (  -0.00,-137.03) (  -0.42,-135.30)  197.27                80
 10/31/2023   22:44:54   (   0.00,-137.02) (  -0.81,-140.61)  409.54                80
 11/01/2023   22:28:51   (  -0.00,-137.01) (   0.18,-136.08)  105.36                80
 11/03/2023   10:50:41   (   0.00,-137.00) (   0.98,-141.36)  497.64                80
 11/04/2023   10:29:18   (   0.01,-136.99) (  -0.01,-136.83)   17.01                80
 11/06/2023   22:32:34   (   0.02,-136.96) (  -0.14,-137.63)   76.86                80
 11/07/2023   22:16:30   (   0.02,-136.94) (   0.86,-133.10)  437.53                80
 11/09/2023   10:38:20   (  -0.02,-136.92) (   0.29,-138.38)  166.10                80
 11/10/2023   10:16:56   (   0.02,-136.91) (  -0.65,-133.84)  348.89                80