Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 10 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 10/19/2017   19:21:52   (  -0.28,-135.21) (  -0.80,-132.70)  285.65                80
 10/20/2017   07:43:16   (   0.27,-135.19) (  -0.30,-137.89)  307.25                80
 10/22/2017   07:28:23   (   0.27,-135.14) (   0.32,-134.93)   23.79                80
 10/24/2017   07:16:10   (   0.27,-135.08) (   0.94,-131.96)  354.32                80
 10/24/2017   19:37:25   (  -0.26,-135.07) (   0.17,-137.12)  232.70                80
 10/26/2017   19:27:52   (  -0.26,-135.01) (  -0.46,-134.16)   97.26                80
 10/27/2017   07:49:14   (   0.25,-134.99) (  -0.69,-139.34)  494.39                80
 10/28/2017   19:15:38   (  -0.25,-134.94) (  -1.02,-131.18)  426.70                80
 10/29/2017   07:37:01   (   0.25,-134.92) (  -0.06,-136.38)  165.26                80
 10/31/2017   07:22:09   (   0.25,-134.85) (   0.58,-133.42)  163.28                80
 10/31/2017   19:43:23   (  -0.24,-134.82) (   0.53,-138.57)  425.93                80