Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 8 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)
 08/07/2023   22:38:27   (  -0.01,-137.00) (  -0.44,-138.98)  225.50                80
 08/08/2023   22:22:20   (  -0.01,-137.01) (   0.54,-134.44)  291.74                80
 08/10/2023   10:44:07   (   0.02,-137.01) (   0.61,-139.71)  308.00                80
 08/11/2023   10:22:40   (   0.02,-137.00) (  -0.37,-135.17)  208.78                80
 08/12/2023   22:44:35   (  -0.03,-137.00) (  -0.80,-140.47)  395.44                80
 08/13/2023   22:28:28   (  -0.03,-136.99) (   0.18,-135.93)  121.12                80
 08/15/2023   10:50:14   (   0.03,-136.99) (   0.96,-141.20)  479.47                80
 08/16/2023   10:28:48   (   0.03,-136.98) (  -0.03,-136.66)   36.81                80
 08/18/2023   22:31:56   (  -0.03,-136.96) (  -0.14,-137.42)   51.99                80
 08/19/2023   22:15:49   (  -0.03,-136.95) (   0.86,-132.88)  464.04                80
 08/21/2023   10:37:36   (   0.03,-136.94) (   0.28,-138.15)  137.42                80