Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 7 30.  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)
 07/31/2023   10:29:09   (   0.01,-137.00) (  -0.06,-136.73)   30.62                80
 08/02/2023   22:32:18   (  -0.02,-136.97) (  -0.11,-137.49)   59.42                80
 08/03/2023   22:16:12   (  -0.02,-136.96) (   0.86,-132.95)  456.43                80
 08/05/2023   10:37:58   (   0.02,-136.95) (   0.30,-138.22)  144.59                80
 08/06/2023   10:16:32   (   0.02,-136.94) (  -0.73,-133.69)  370.97                80
 08/07/2023   22:38:27   (  -0.02,-136.91) (  -0.45,-138.98)  235.64                80
 08/08/2023   22:22:20   (  -0.02,-136.90) (   0.52,-134.44)  279.67                80
 08/10/2023   10:44:07   (   0.03,-136.88) (   0.63,-139.71)  322.26                80
 08/11/2023   10:22:40   (   0.03,-136.86) (  -0.35,-135.17)  192.55                80
 08/12/2023   22:44:34   (  -0.03,-136.82) (  -0.83,-140.47)  415.26                80