Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 6 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 06/28/2018   07:23:32   (   0.11,-135.10) (   0.40,-133.61)  168.72                80
 06/28/2018   19:47:28   (  -0.08,-135.13) (   0.67,-138.77)  413.39                80
 06/30/2018   19:35:17   (  -0.09,-135.19) (   0.04,-135.82)   71.23                80
 07/02/2018   19:20:26   (  -0.11,-135.25) (  -0.59,-132.86)  270.42                80
 07/03/2018   07:44:30   (   0.08,-135.24) (  -0.53,-138.05)  319.84                80
 07/05/2018   07:29:39   (   0.09,-135.29) (   0.11,-135.10)   21.38                80
 07/07/2018   07:17:28   (   0.10,-135.33) (   0.75,-132.15)  361.88                80
 07/07/2018   19:41:24   (  -0.07,-135.36) (   0.32,-137.31)  220.77                80
 07/09/2018   19:26:33   (  -0.07,-135.39) (  -0.32,-134.36)  118.77                80
 07/10/2018   07:50:36   (   0.04,-135.38) (  -0.85,-139.53)  472.00                80