Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 9 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/12/2018   07:50:26   (   0.32,-135.27) (  -0.60,-139.56)  488.20                80
 09/13/2018   19:16:50   (  -0.29,-135.37) (  -1.13,-131.41)  450.04                80
 09/14/2018   07:35:34   (   0.31,-135.33) (   0.02,-136.60)  145.01                80
 09/16/2018   07:26:03   (   0.31,-135.39) (   0.70,-133.65)  197.68                80
 09/16/2018   19:44:38   (  -0.32,-135.45) (   0.41,-138.81)  382.31                80
 09/18/2018   19:32:27   (  -0.31,-135.50) (  -0.26,-135.86)   40.33                80
 09/20/2018   19:22:55   (  -0.31,-135.55) (  -0.88,-132.90)  301.17                80
 09/21/2018   07:44:19   (   0.33,-135.52) (  -0.23,-138.09)  292.96                80
 09/23/2018   07:29:28   (   0.32,-135.56) (   0.44,-135.14)   47.83                80
 09/25/2018   07:17:16   (   0.32,-135.59) (   1.05,-132.18)  387.88                80
 09/25/2018   19:38:31   (  -0.33,-135.64) (   0.02,-137.35)  193.73                80