Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 5 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)
 05/11/2018   07:25:55   (   0.14,-135.44) (   0.52,-133.55)  214.13                80
 05/11/2018   19:47:10   (  -0.14,-135.46) (   0.57,-138.71)  370.07                80
 05/13/2018   19:35:00   (  -0.14,-135.43) (  -0.05,-135.76)   37.37                80
 05/15/2018   19:20:11   (  -0.14,-135.40) (  -0.67,-132.81)  294.54                80
 05/16/2018   07:44:15   (   0.14,-135.36) (  -0.40,-138.00)  299.94                80
 05/18/2018   07:29:25   (   0.14,-135.32) (   0.22,-135.05)   30.84                80
 05/20/2018   07:17:15   (   0.15,-135.27) (   0.85,-132.10)  360.68                80
 05/20/2018   19:41:10   (  -0.14,-135.28) (   0.30,-137.25)  224.16                80
 05/22/2018   19:26:20   (  -0.15,-135.23) (  -0.33,-134.30)  105.40                80
 05/23/2018   07:50:24   (   0.14,-135.19) (  -0.80,-139.49)  489.63                80
 05/24/2018   19:14:10   (  -0.16,-135.18) (  -0.97,-131.35)  434.81                80