Simultaneous Nadir Overpasses (SNOs) between GOES-17 and TERRA
TLE Epoch: 2021 9 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 10/01/2021   07:26:32   (   0.05,-137.19) (   0.55,-134.88)  262.06                80
 10/01/2021   19:45:07   (  -0.04,-137.19) (   0.54,-140.04)  323.76                80
 10/03/2021   19:35:33   (  -0.04,-137.17) (  -0.07,-137.08)   10.54                80
 10/05/2021   19:23:19   (  -0.04,-137.15) (  -0.68,-134.12)  344.21                80
 10/06/2021   07:44:43   (   0.04,-137.13) (  -0.40,-139.32)  248.03                80
 10/08/2021   07:32:29   (   0.04,-137.10) (   0.22,-136.36)   84.84                80
 10/10/2021   07:20:15   (   0.04,-137.06) (   0.84,-133.40)  416.72                80
 10/10/2021   19:38:48   (  -0.04,-137.06) (   0.31,-138.55)  170.02                80
 10/12/2021   19:29:15   (  -0.03,-137.01) (  -0.32,-135.59)  160.94                80
 10/13/2021   07:47:58   (   0.03,-136.98) (  -0.76,-140.79)  431.89                80