Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-20
TLE Epoch: 2021 12 11.  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)
 12/11/2021   22:39:45   (   0.01,-137.21) (  -0.41,-139.07)  212.31                80
 12/12/2021   22:23:40   (   0.01,-137.21) (   0.60,-134.53)  304.78                80
 12/14/2021   10:42:46   (  -0.01,-137.21) (   0.58,-139.79)  294.79                80
 12/15/2021   10:26:41   (  -0.01,-137.21) (  -0.44,-135.26)  221.96                80
 12/16/2021   22:45:56   (   0.01,-137.19) (  -0.72,-140.56)  382.83                80
 12/17/2021   22:29:49   (   0.00,-137.19) (   0.24,-136.01)  133.51                80
 12/19/2021   10:48:56   (   0.00,-137.18) (   0.94,-141.27)  467.34                80
 12/20/2021   10:32:50   (   0.01,-137.16) (  -0.08,-136.74)   48.45                80
 12/22/2021   22:33:19   (  -0.01,-137.13) (  -0.12,-137.49)   42.48                80
 12/23/2021   22:17:14   (  -0.01,-137.11) (   0.91,-132.96)  472.86                80