Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 6 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 07/02/2017   07:28:15   (   0.08,-135.42) (   0.18,-134.81)   68.71                80
 07/04/2017   07:16:05   (   0.08,-135.41) (   0.85,-131.87)  403.06                80
 07/04/2017   19:39:59   (  -0.06,-135.46) (   0.30,-137.02)  177.97                80
 07/06/2017   19:25:09   (  -0.07,-135.44) (  -0.34,-134.07)  155.42                80
 07/07/2017   07:49:13   (   0.04,-135.38) (  -0.79,-139.25)  440.34                80
 07/08/2017   19:12:59   (  -0.07,-135.41) (  -0.96,-131.12)  487.97                80
 07/09/2017   07:37:03   (   0.05,-135.36) (  -0.17,-136.30)  108.01                80
 07/11/2017   07:22:14   (   0.06,-135.32) (   0.48,-133.36)  223.52                80
 07/11/2017   19:46:10   (  -0.03,-135.36) (   0.63,-138.52)  358.29                80
 07/13/2017   19:34:01   (  -0.04,-135.32) (  -0.00,-135.57)   27.64                80