Simultaneous Nadir Overpasses (SNOs) between GOES-17 and TERRA
TLE Epoch: 2021 7 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 07/20/2021   07:33:50   (   0.00,-137.20) (   0.19,-136.33)   99.64                80
 07/20/2021   19:52:25   (  -0.00,-137.21) (   0.90,-141.49)  486.22                80
 07/22/2021   07:21:36   (  -0.01,-137.20) (   0.81,-133.37)  435.29                80
 07/22/2021   19:40:11   (   0.01,-137.20) (   0.28,-138.53)  150.71                80
 07/24/2021   19:30:37   (   0.01,-137.18) (  -0.35,-135.57)  184.32                80
 07/25/2021   07:49:20   (  -0.00,-137.17) (  -0.79,-140.75)  407.23                80
 07/27/2021   07:37:07   (   0.02,-137.16) (  -0.10,-137.80)   72.86                80
 07/29/2021   07:27:33   (   0.02,-137.14) (   0.53,-134.84)  261.81                80
 07/29/2021   19:46:08   (  -0.02,-137.14) (   0.56,-140.00)  324.52                80
 07/31/2021   19:36:33   (  -0.01,-137.12) (  -0.01,-137.03)   10.10                80