Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 7 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 07/11/2017   07:22:13   (   0.05,-135.30) (   0.48,-133.35)  222.27                80
 07/11/2017   19:46:08   (  -0.03,-135.35) (   0.67,-138.50)  357.86                80
 07/13/2017   19:33:58   (  -0.03,-135.31) (   0.05,-135.54)   27.12                80
 07/15/2017   19:19:08   (  -0.04,-135.27) (  -0.58,-132.59)  303.44                80
 07/16/2017   07:43:12   (   0.01,-135.19) (  -0.56,-137.78)  294.49                80
 07/18/2017   07:28:22   (   0.02,-135.14) (   0.08,-134.83)   34.93                80
 07/20/2017   07:16:12   (   0.03,-135.07) (   0.71,-131.88)  363.54                80
 07/20/2017   19:40:07   (   0.01,-135.12) (   0.44,-137.03)  217.64                80
 07/22/2017   19:25:17   (  -0.00,-135.05) (  -0.20,-134.08)  110.13                80
 07/23/2017   07:49:21   (  -0.03,-134.97) (  -0.93,-139.26)  487.93                80
 07/24/2017   19:13:07   (  -0.01,-134.97) (  -0.83,-131.13)  437.54                80