Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 9 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/11/2018   19:29:02   (  -0.30,-135.30) (  -0.50,-134.37)  106.55                80
 09/12/2018   07:50:26   (   0.32,-135.27) (  -0.61,-139.56)  488.25                80
 09/13/2018   19:16:50   (  -0.29,-135.37) (  -1.11,-131.41)  450.09                80
 09/14/2018   07:38:15   (   0.32,-135.33) (   0.05,-136.61)  145.02                80
 09/16/2018   07:23:23   (   0.30,-135.39) (   0.66,-133.65)  197.63                80
 09/16/2018   19:44:39   (  -0.32,-135.45) (   0.41,-138.81)  382.29                80
 09/18/2018   19:32:28   (  -0.32,-135.51) (  -0.24,-135.86)   40.29                80
 09/20/2018   19:22:57   (  -0.31,-135.55) (  -0.88,-132.91)  300.98                80
 09/21/2018   07:44:21   (   0.33,-135.52) (  -0.24,-138.10)  293.26                80
 09/23/2018   07:29:30   (   0.32,-135.56) (   0.39,-135.14)   47.30                80