Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 9 10.  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,-135.31) (  -0.51,-134.37)  106.54                80
 09/12/2018   07:50:26   (   0.32,-135.27) (  -0.59,-139.56)  488.25                80
 09/13/2018   19:16:50   (  -0.29,-135.37) (  -1.14,-131.41)  450.22                80
 09/14/2018   07:35:34   (   0.31,-135.33) (   0.03,-136.61)  144.86                80
 09/16/2018   07:23:22   (   0.30,-135.39) (   0.66,-133.65)  198.00                80
 09/16/2018   19:44:38   (  -0.32,-135.46) (   0.40,-138.81)  381.83                80
 09/18/2018   19:32:26   (  -0.32,-135.51) (  -0.22,-135.85)   39.60                80
 09/20/2018   19:22:54   (  -0.31,-135.56) (  -0.85,-132.90)  302.10                80
 09/21/2018   07:44:19   (   0.33,-135.53) (  -0.20,-138.10)  292.09                80
 09/23/2018   07:29:27   (   0.32,-135.57) (   0.43,-135.14)   48.86                80