Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 9 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/24/2017   19:28:12   (  -0.29,-135.41) (  -0.56,-134.22)  135.82                80
 09/25/2017   07:49:36   (   0.30,-135.39) (  -0.55,-139.41)  457.22                80
 09/26/2017   19:16:00   (  -0.29,-135.43) (  -1.16,-131.26)  473.84                80
 09/27/2017   07:37:24   (   0.30,-135.40) (   0.05,-136.45)  119.58                80
 09/29/2017   07:22:33   (   0.29,-135.41) (   0.71,-133.50)  217.40                80
 09/29/2017   19:43:49   (  -0.30,-135.43) (   0.36,-138.67)  366.75                80
 10/01/2017   19:31:37   (  -0.29,-135.44) (  -0.23,-135.70)   30.31                80
 10/03/2017   19:22:06   (  -0.29,-135.43) (  -0.88,-132.75)  305.43                80
 10/04/2017   07:43:30   (   0.29,-135.42) (  -0.23,-137.94)  286.75                80
 10/06/2017   07:28:38   (   0.29,-135.41) (   0.35,-134.98)   48.06                80