Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 6 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 06/21/2018   19:41:21   (  -0.11,-134.87) (   0.37,-137.28)  273.27                80
 06/23/2018   19:26:30   (  -0.12,-134.96) (  -0.25,-134.33)   71.27                80
 06/25/2018   19:14:20   (  -0.13,-135.03) (  -0.92,-131.39)  415.25                80
 06/26/2018   07:38:24   (   0.10,-135.04) (  -0.20,-136.57)  173.57                80
 06/28/2018   07:23:33   (   0.11,-135.11) (   0.42,-133.62)  169.60                80
 06/28/2018   19:47:29   (  -0.08,-135.14) (   0.66,-138.78)  413.37                80
 06/30/2018   19:35:18   (  -0.09,-135.20) (   0.05,-135.82)   70.89                80
 07/02/2018   19:20:28   (  -0.11,-135.26) (  -0.63,-132.88)  271.05                80
 07/03/2018   07:44:32   (   0.08,-135.27) (  -0.49,-138.07)  318.18                80
 07/05/2018   07:29:41   (   0.09,-135.32) (   0.13,-135.11)   23.24                80