Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 7 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 07/13/2017   19:33:59   (  -0.03,-135.32) (  -0.01,-135.56)   26.85                80
 07/15/2017   19:19:08   (  -0.04,-135.27) (  -0.59,-132.60)  303.74                80
 07/16/2017   07:43:12   (   0.01,-135.20) (  -0.55,-137.78)  294.38                80
 07/18/2017   07:28:22   (   0.02,-135.14) (   0.10,-134.83)   35.21                80
 07/20/2017   07:16:11   (   0.02,-135.08) (   0.69,-131.87)  364.01                80
 07/20/2017   19:40:07   (   0.01,-135.12) (   0.39,-137.03)  216.87                80
 07/22/2017   19:25:16   (  -0.00,-135.05) (  -0.21,-134.08)  111.11                80
 07/23/2017   07:49:19   (  -0.03,-134.98) (  -0.92,-139.26)  487.15                80
 07/24/2017   19:13:05   (  -0.01,-134.98) (  -0.81,-131.12)  438.80                80
 07/25/2017   07:37:08   (  -0.02,-134.90) (  -0.31,-136.31)  159.54                80