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

     Date     Time(GOES-17)   GOES-17 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 06/18/2021   19:52:59   (   0.01,-137.19) (   0.95,-141.49)  489.32                80
 06/20/2021   07:22:12   (  -0.02,-137.19) (   0.79,-133.38)  432.47                80
 06/20/2021   19:40:46   (   0.02,-137.18) (   0.31,-138.54)  154.22                80
 06/22/2021   19:31:13   (   0.02,-137.17) (  -0.32,-135.58)  179.98                80
 06/23/2021   07:49:57   (  -0.02,-137.16) (  -0.77,-140.78)  411.29                80
 06/25/2021   07:37:43   (  -0.02,-137.13) (  -0.19,-137.81)   78.21                80
 06/27/2021   07:28:10   (  -0.02,-137.10) (   0.46,-134.86)  254.47                80
 06/27/2021   19:46:45   (   0.02,-137.09) (   0.64,-140.02)  332.89                80
 06/29/2021   19:37:12   (   0.02,-137.06) (  -0.00,-137.06)    2.36                80
 07/01/2021   19:24:58   (   0.01,-137.02) (  -0.59,-134.10)  332.02                80
 07/02/2021   07:43:42   (  -0.01,-137.01) (  -0.49,-139.29)  259.39                80