Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 11 13.  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)
 11/14/2023   10:44:40   (  -0.00,-137.01) (   0.65,-139.91)  330.04                80
 11/15/2023   10:25:57   (   0.00,-137.01) (  -0.36,-135.38)  185.83                80
 11/16/2023   22:45:14   (  -0.01,-137.00) (  -0.86,-140.68)  420.74                80
 11/17/2023   22:29:10   (  -0.01,-136.99) (   0.16,-136.16)   94.65                80
 11/20/2023   10:32:16   (   0.01,-136.98) (  -0.01,-136.91)    8.20                80
 11/22/2023   22:32:50   (  -0.01,-136.95) (  -0.17,-137.69)   84.24                80
 11/23/2023   22:16:46   (  -0.01,-136.94) (   0.81,-133.15)  430.70                80
 11/25/2023   10:35:55   (   0.02,-136.93) (   0.36,-138.43)  171.60                80
 11/26/2023   10:19:51   (   0.02,-136.91) (  -0.67,-133.91)  342.98                80