Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-20
TLE Epoch: 2021 6 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-20 Lat/Lon    Distance(km)  Time Diff(sec)
 06/18/2021   22:43:21   (  -0.02,-137.19) (  -0.50,-139.25)  235.57                80
 06/19/2021   22:21:56   (  -0.02,-137.19) (   0.51,-134.72)  280.15                80
 06/21/2021   10:46:25   (   0.02,-137.18) (   0.64,-140.00)  321.23                80
 06/22/2021   10:25:00   (   0.01,-137.17) (  -0.37,-135.47)  193.76                80
 06/23/2021   22:49:36   (  -0.00,-137.15) (  -0.83,-140.77)  413.73                80
 06/24/2021   22:28:12   (   0.00,-137.13) (   0.19,-136.25)  100.84                80
 06/27/2021   10:31:16   (  -0.01,-137.10) (  -0.05,-136.99)   12.54                80
 06/29/2021   22:34:28   (   0.01,-137.05) (  -0.13,-137.77)   81.23                80
 06/30/2021   22:18:22   (   0.01,-137.03) (   0.83,-133.23)  433.26                80
 07/02/2021   10:40:10   (  -0.00,-137.01) (   0.33,-138.50)  169.86                80