Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 9 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/14/2018   07:38:14   (   0.31,-135.33) (   0.05,-136.60)  144.90                80
 09/16/2018   07:23:21   (   0.30,-135.38) (   0.67,-133.64)  197.86                80
 09/16/2018   19:44:37   (  -0.32,-135.44) (   0.37,-138.81)  382.17                80
 09/18/2018   19:32:24   (  -0.31,-135.49) (  -0.26,-135.85)   39.84                80
 09/20/2018   19:22:50   (  -0.31,-135.54) (  -0.85,-132.87)  302.12                80
 09/21/2018   07:44:13   (   0.33,-135.51) (  -0.23,-138.07)  291.75                80
 09/23/2018   07:29:21   (   0.32,-135.54) (   0.44,-135.11)   49.72                80
 09/25/2018   07:17:07   (   0.32,-135.58) (   1.08,-132.15)  390.62                80
 09/25/2018   19:38:21   (  -0.33,-135.62) (   0.01,-137.31)  190.91                80
 09/27/2018   19:28:46   (  -0.33,-135.65) (  -0.59,-134.33)  149.61                80