Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 9 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/27/2017   07:37:23   (   0.30,-135.40) (   0.05,-136.45)  119.59                80
 09/29/2017   07:22:31   (   0.29,-135.41) (   0.68,-133.49)  217.37                80
 09/29/2017   19:43:47   (  -0.30,-135.43) (   0.38,-138.66)  366.76                80
 10/01/2017   19:31:35   (  -0.29,-135.43) (  -0.25,-135.70)   30.32                80
 10/03/2017   19:22:03   (  -0.29,-135.43) (  -0.89,-132.74)  305.62                80
 10/04/2017   07:43:26   (   0.29,-135.41) (  -0.26,-137.92)  286.50                80
 10/06/2017   07:28:34   (   0.29,-135.40) (   0.38,-134.97)   48.41                80
 10/08/2017   07:16:22   (   0.29,-135.38) (   1.03,-132.02)  382.60                80
 10/08/2017   19:37:37   (  -0.29,-135.38) (   0.10,-137.17)  203.72                80
 10/10/2017   19:28:05   (  -0.29,-135.35) (  -0.55,-134.21)  129.61                80