Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 4 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/23/2018   07:35:10   (   0.11,-135.42) (  -0.14,-136.44)  116.99                80
 04/25/2018   07:25:41   (   0.11,-135.44) (   0.53,-133.50)  221.09                80
 04/25/2018   19:46:57   (  -0.11,-135.45) (   0.58,-138.66)  365.06                80
 04/27/2018   19:34:48   (  -0.11,-135.47) (  -0.09,-135.72)   27.36                80
 04/29/2018   19:19:58   (  -0.11,-135.49) (  -0.71,-132.77)  310.33                80
 04/30/2018   07:41:22   (   0.12,-135.50) (  -0.42,-137.95)  279.66                80
 05/02/2018   07:31:52   (   0.12,-135.51) (   0.21,-135.00)   57.19                80
 05/04/2018   07:19:42   (   0.13,-135.52) (   0.85,-132.06)  393.38                80
 05/04/2018   19:40:58   (  -0.13,-135.52) (   0.25,-137.21)  193.12                80
 05/06/2018   19:26:08   (  -0.13,-135.52) (  -0.39,-134.27)  142.42                80