Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 9 7.  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)
 09/07/2023   10:16:30   (  -0.00,-137.01) (  -0.71,-133.71)  375.29                80
 09/08/2023   22:38:27   (   0.00,-137.01) (  -0.45,-139.02)  229.74                80
 09/09/2023   22:22:23   (   0.00,-137.00) (   0.56,-134.49)  286.11                80
 09/11/2023   10:44:11   (  -0.00,-137.00) (   0.61,-139.77)  315.72                80
 09/12/2023   10:22:47   (  -0.00,-136.99) (  -0.39,-135.24)  199.95                80
 09/13/2023   22:44:43   (   0.00,-136.98) (  -0.82,-140.54)  405.64                80
 09/14/2023   22:28:39   (  -0.00,-136.98) (   0.19,-136.01)  109.93                80
 09/16/2023   10:50:27   (   0.00,-136.96) (   0.97,-141.28)  492.41                80
 09/17/2023   10:29:02   (   0.00,-136.95) (  -0.04,-136.75)   22.69                80
 09/19/2023   22:32:14   (   0.00,-136.92) (  -0.15,-137.53)   69.51                80
 09/20/2023   22:16:10   (   0.00,-136.90) (   0.87,-133.00)  444.82                80