Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 4 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/18/2018   07:19:29   (   0.09,-135.34) (   0.82,-131.99)  381.38                80
 04/18/2018   19:40:45   (  -0.09,-135.34) (   0.29,-137.14)  204.71                80
 04/20/2018   19:25:56   (  -0.10,-135.38) (  -0.35,-134.20)  134.01                80
 04/21/2018   07:47:21   (   0.10,-135.39) (  -0.73,-139.40)  455.55                80
 04/22/2018   19:13:47   (  -0.10,-135.40) (  -0.99,-131.25)  472.00                80
 04/23/2018   07:35:12   (   0.11,-135.41) (  -0.09,-136.45)  117.64                80
 04/25/2018   07:25:42   (   0.11,-135.44) (   0.50,-133.49)  220.11                80
 04/25/2018   19:46:58   (  -0.11,-135.44) (   0.55,-138.66)  366.16                80
 04/27/2018   19:34:49   (  -0.11,-135.46) (  -0.03,-135.71)   28.85                80
 04/29/2018   19:20:00   (  -0.11,-135.48) (  -0.68,-132.76)  308.40                80
 04/30/2018   07:41:24   (   0.12,-135.48) (  -0.40,-137.96)  281.71                80