Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 7 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 07/19/2018   07:44:29   (   0.01,-135.49) (  -0.56,-138.05)  291.03                80
 07/21/2018   07:29:38   (   0.02,-135.51) (   0.11,-135.10)   46.38                80
 07/23/2018   07:17:26   (   0.02,-135.51) (   0.71,-132.14)  383.34                80
 07/23/2018   19:41:22   (   0.01,-135.54) (   0.36,-137.30)  199.38                80
 07/25/2018   19:26:30   (   0.00,-135.54) (  -0.25,-134.34)  136.75                80
 07/26/2018   07:50:33   (  -0.04,-135.52) (  -0.91,-139.52)  455.48                80
 07/27/2018   19:14:18   (  -0.01,-135.54) (  -0.87,-131.38)  472.40                80
 07/28/2018   07:38:22   (  -0.03,-135.51) (  -0.23,-136.57)  119.96                80
 07/30/2018   07:23:30   (  -0.02,-135.50) (   0.39,-133.61)  215.13                80
 07/30/2018   19:47:25   (   0.06,-135.53) (   0.74,-138.76)  367.90                80
 08/01/2018   19:35:13   (   0.05,-135.51) (   0.12,-135.80)   33.35                80