Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 5 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)
 05/11/2018   07:25:55   (   0.14,-135.43) (   0.54,-133.55)  214.08                80
 05/11/2018   19:47:11   (  -0.14,-135.46) (   0.55,-138.71)  370.07                80
 05/13/2018   19:35:01   (  -0.14,-135.43) (  -0.08,-135.76)   37.36                80
 05/15/2018   19:20:11   (  -0.14,-135.40) (  -0.72,-132.81)  294.54                80
 05/16/2018   07:44:15   (   0.14,-135.36) (  -0.42,-138.00)  299.97                80
 05/18/2018   07:29:25   (   0.14,-135.32) (   0.23,-135.05)   30.89                80
 05/20/2018   07:17:14   (   0.15,-135.27) (   0.82,-132.09)  360.74                80
 05/20/2018   19:41:09   (  -0.14,-135.28) (   0.27,-137.25)  224.02                80
 05/22/2018   19:26:19   (  -0.15,-135.23) (  -0.32,-134.29)  105.65                80
 05/23/2018   07:50:22   (   0.14,-135.18) (  -0.80,-139.48)  489.39                80