Simultaneous Nadir Overpasses (SNOs) between GOES-17 and TERRA
TLE Epoch: 2021 9 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/13/2021   07:36:22   (   0.04,-137.19) (  -0.08,-137.83)   72.11                80
 09/15/2021   07:26:49   (   0.04,-137.17) (   0.55,-134.87)  262.08                80
 09/15/2021   19:45:23   (  -0.04,-137.17) (   0.55,-140.03)  325.10                80
 09/17/2021   19:35:49   (  -0.03,-137.15) (  -0.03,-137.07)    8.80                80
 09/19/2021   19:23:36   (  -0.03,-137.12) (  -0.68,-134.11)  342.30                80
 09/20/2021   07:45:00   (   0.03,-137.12) (  -0.42,-139.31)  248.68                80
 09/22/2021   07:30:06   (   0.03,-137.09) (   0.17,-136.34)   84.70                80
 09/24/2021   07:17:53   (   0.03,-137.06) (   0.82,-133.39)  417.53                80
 09/24/2021   19:39:08   (  -0.03,-137.05) (   0.28,-138.55)  170.08                80
 09/26/2021   19:29:34   (  -0.02,-137.01) (  -0.32,-135.59)  161.92                80