Simultaneous Nadir Overpasses (SNOs) between GOES-17 and TERRA
TLE Epoch: 2021 5 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 05/14/2021   19:25:47   (   0.05,-137.20) (  -0.61,-134.11)  350.72                80
 05/15/2021   07:44:31   (  -0.04,-137.20) (  -0.48,-139.31)  239.89                80
 05/17/2021   07:34:57   (  -0.04,-137.19) (   0.11,-136.34)   95.90                80
 05/17/2021   19:53:31   (   0.04,-137.19) (   0.98,-141.50)  490.76                80
 05/19/2021   07:22:44   (  -0.03,-137.18) (   0.77,-133.39)  431.02                80
 05/19/2021   19:41:19   (   0.03,-137.18) (   0.32,-138.55)  155.68                80
 05/21/2021   19:31:45   (   0.03,-137.16) (  -0.28,-135.58)  179.03                80
 05/22/2021   07:50:28   (  -0.03,-137.16) (  -0.81,-140.78)  411.95                80
 05/24/2021   07:38:14   (  -0.03,-137.14) (  -0.20,-137.82)   78.09                80
 05/26/2021   07:28:41   (  -0.02,-137.10) (   0.47,-134.87)  254.97                80
 05/26/2021   19:47:16   (   0.02,-137.10) (   0.62,-140.02)  332.52                80