Simultaneous Nadir Overpasses (SNOs) between GOES-17 and TERRA
TLE Epoch: 2021 6 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 06/15/2021   19:25:14   (   0.02,-137.20) (  -0.66,-134.11)  352.07                80
 06/16/2021   07:43:58   (  -0.02,-137.20) (  -0.44,-139.30)  238.41                80
 06/18/2021   07:34:24   (  -0.02,-137.20) (   0.13,-136.33)   97.32                80
 06/18/2021   19:53:00   (   0.01,-137.19) (   0.90,-141.50)  489.64                80
 06/20/2021   07:22:11   (  -0.02,-137.19) (   0.77,-133.38)  432.37                80
 06/20/2021   19:40:46   (   0.02,-137.18) (   0.33,-138.54)  154.74                80
 06/22/2021   19:31:13   (   0.02,-137.16) (  -0.30,-135.58)  179.31                80
 06/23/2021   07:49:57   (  -0.02,-137.16) (  -0.79,-140.78)  411.64                80
 06/25/2021   07:37:44   (  -0.02,-137.13) (  -0.14,-137.82)   78.78                80
 06/27/2021   07:28:10   (  -0.01,-137.09) (   0.44,-134.86)  253.68                80
 06/27/2021   19:46:45   (   0.01,-137.08) (   0.66,-140.01)  334.05                80