Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 6 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)
 06/19/2018   07:32:16   (   0.13,-134.76) (   0.04,-135.07)   35.91                80
 06/21/2018   07:17:26   (   0.14,-134.85) (   0.73,-132.13)  309.50                80
 06/21/2018   19:41:20   (  -0.11,-134.88) (   0.41,-137.28)  273.37                80
 06/23/2018   19:26:30   (  -0.12,-134.96) (  -0.28,-134.34)   71.61                80
 06/25/2018   19:14:20   (  -0.13,-135.04) (  -0.91,-131.38)  416.01                80
 06/26/2018   07:38:23   (   0.10,-135.05) (  -0.21,-136.57)  172.28                80
 06/28/2018   07:23:32   (   0.11,-135.13) (   0.42,-133.62)  171.39                80
 06/28/2018   19:47:27   (  -0.08,-135.15) (   0.71,-138.77)  411.79                80
 06/30/2018   19:35:17   (  -0.09,-135.22) (   0.01,-135.83)   68.80                80
 07/02/2018   19:20:26   (  -0.11,-135.28) (  -0.63,-132.87)  273.73                80