Simultaneous Nadir Overpasses (SNOs) between GOES-17 and TERRA
TLE Epoch: 2021 7 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)
 07/18/2021   07:43:24   (   0.01,-137.21) (  -0.42,-139.29)  236.81                80
 07/20/2021   07:33:50   (  -0.00,-137.20) (   0.20,-136.33)   99.69                80
 07/20/2021   19:52:25   (  -0.00,-137.21) (   0.89,-141.49)  486.28                80
 07/22/2021   07:21:37   (  -0.01,-137.20) (   0.82,-133.37)  435.32                80
 07/22/2021   19:40:11   (   0.01,-137.20) (   0.27,-138.53)  150.80                80
 07/24/2021   19:30:37   (   0.01,-137.18) (  -0.36,-135.57)  184.25                80
 07/25/2021   07:49:20   (  -0.01,-137.17) (  -0.78,-140.75)  407.19                80
 07/27/2021   07:37:07   (   0.01,-137.16) (  -0.09,-137.81)   72.89                80
 07/29/2021   07:27:33   (   0.02,-137.14) (   0.53,-134.85)  261.78                80
 07/29/2021   19:46:07   (  -0.02,-137.14) (   0.62,-139.99)  324.68                80
 07/31/2021   19:36:33   (  -0.01,-137.12) (  -0.01,-137.03)    9.72                80