Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 7 10.  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) (   0.46,-133.34)  222.24                80
 07/11/2017   19:46:09   (  -0.03,-135.35) (   0.63,-138.50)  357.90                80
 07/13/2017   19:33:59   (  -0.03,-135.31) (   0.02,-135.55)   27.01                80
 07/15/2017   19:19:09   (  -0.04,-135.27) (  -0.60,-132.60)  303.24                80
 07/16/2017   07:43:13   (   0.01,-135.19) (  -0.54,-137.78)  294.68                80
 07/18/2017   07:28:23   (   0.02,-135.14) (   0.07,-134.83)   34.65                80
 07/20/2017   07:16:13   (   0.03,-135.07) (   0.68,-131.88)  363.07                80
 07/20/2017   19:40:09   (   0.01,-135.12) (   0.42,-137.04)  218.15                80
 07/22/2017   19:25:19   (  -0.00,-135.05) (  -0.19,-134.08)  109.42                80
 07/23/2017   07:49:22   (  -0.03,-134.97) (  -0.95,-139.27)  488.70                80