Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-20
TLE Epoch: 2021 5 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)
 05/18/2021   22:21:51   (   0.01,-137.20) (   0.58,-134.68)  286.79                80
 05/20/2021   10:46:19   (  -0.01,-137.20) (   0.59,-139.96)  313.53                80
 05/21/2021   10:24:55   (  -0.01,-137.20) (  -0.42,-135.43)  202.32                80
 05/22/2021   22:49:31   (   0.00,-137.19) (  -0.80,-140.73)  403.83                80
 05/23/2021   22:28:07   (   0.01,-137.18) (   0.21,-136.20)  111.64                80
 05/25/2021   10:52:35   (  -0.01,-137.17) (   0.95,-141.47)  490.02                80
 05/26/2021   10:31:10   (  -0.01,-137.16) (  -0.05,-136.94)   24.80                80
 05/28/2021   22:34:22   (   0.01,-137.12) (  -0.15,-137.71)   68.67                80
 05/29/2021   22:18:18   (   0.01,-137.10) (   0.86,-133.18)  445.79                80
 05/31/2021   10:37:26   (  -0.00,-137.08) (   0.30,-138.46)  157.26                80