Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 6 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 06/25/2017   19:46:05   (  -0.08,-135.48) (   0.56,-138.50)  343.73                80
 06/27/2017   19:31:14   (  -0.09,-135.48) (  -0.10,-135.55)    7.94                80
 06/29/2017   19:19:02   (  -0.10,-135.48) (  -0.71,-132.59)  329.10                80
 06/30/2017   07:43:05   (   0.07,-135.44) (  -0.45,-137.77)  265.71                80
 07/02/2017   07:28:14   (   0.08,-135.44) (   0.23,-134.82)   70.39                80
 07/04/2017   07:16:02   (   0.08,-135.43) (   0.85,-131.86)  406.00                80
 07/04/2017   19:39:57   (  -0.06,-135.47) (   0.28,-137.01)  174.91                80
 07/06/2017   19:25:05   (  -0.07,-135.46) (  -0.34,-134.05)  159.90                80
 07/07/2017   07:49:09   (   0.04,-135.41) (  -0.75,-139.24)  435.31                80
 07/08/2017   19:12:53   (  -0.07,-135.44) (  -0.97,-131.09)  494.02                80
 07/09/2017   07:36:57   (   0.05,-135.39) (  -0.12,-136.28)  101.32                80