Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 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)
 07/10/2018   07:50:36   (   0.04,-135.39) (  -0.85,-139.53)  471.35                80
 07/11/2018   19:14:22   (  -0.07,-135.44) (  -0.96,-131.40)  459.43                80
 07/12/2018   07:38:25   (   0.04,-135.42) (  -0.22,-136.58)  132.45                80
 07/14/2018   07:23:34   (   0.06,-135.44) (   0.42,-133.63)  205.68                80
 07/14/2018   19:47:29   (  -0.02,-135.47) (   0.67,-138.79)  376.40                80
 07/16/2018   19:35:19   (  -0.03,-135.49) (   0.04,-135.83)   38.68                80
 07/18/2018   19:20:28   (  -0.05,-135.51) (  -0.58,-132.88)  298.76                80
 07/19/2018   07:44:31   (   0.01,-135.48) (  -0.52,-138.07)  293.51                80
 07/21/2018   07:29:40   (   0.02,-135.50) (   0.10,-135.11)   43.51                80
 07/23/2018   07:17:29   (   0.02,-135.50) (   0.72,-132.16)  380.03                80
 07/23/2018   19:41:25   (   0.01,-135.54) (   0.38,-137.32)  202.39                80