Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 4 18.  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   07:19:28   (   0.09,-135.34) (   0.77,-131.98)  381.68                80
 04/18/2018   19:40:45   (  -0.09,-135.34) (   0.28,-137.15)  204.51                80
 04/20/2018   19:25:56   (  -0.10,-135.38) (  -0.37,-134.20)  134.41                80
 04/21/2018   07:47:20   (   0.10,-135.39) (  -0.77,-139.39)  455.01                80
 04/22/2018   19:13:46   (  -0.10,-135.41) (  -0.96,-131.25)  472.57                80
 04/23/2018   07:35:11   (   0.11,-135.42) (  -0.12,-136.44)  116.90                80
 04/25/2018   07:25:42   (   0.11,-135.44) (   0.53,-133.50)  221.00                80
 04/25/2018   19:46:58   (  -0.11,-135.45) (   0.57,-138.66)  365.31                80
 04/27/2018   19:34:49   (  -0.11,-135.47) (  -0.08,-135.72)   27.73                80
 04/29/2018   19:19:59   (  -0.11,-135.49) (  -0.68,-132.76)  309.69                80
 04/30/2018   07:41:24   (   0.12,-135.49) (  -0.39,-137.96)  280.25                80