Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 4 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/09/2018   07:25:23   (   0.07,-135.09) (   0.40,-133.41)  190.91                80
 04/09/2018   19:46:40   (  -0.08,-135.11) (   0.64,-138.58)  394.34                80
 04/11/2018   19:31:50   (  -0.08,-135.16) (   0.05,-135.62)   52.68                80
 04/13/2018   19:22:21   (  -0.08,-135.22) (  -0.62,-132.68)  288.83                80
 04/14/2018   07:41:06   (   0.08,-135.23) (  -0.46,-137.88)  300.16                80
 04/16/2018   07:31:36   (   0.08,-135.28) (   0.16,-134.93)   40.58                80
 04/18/2018   07:19:26   (   0.09,-135.32) (   0.80,-131.98)  380.49                80
 04/18/2018   19:38:02   (  -0.09,-135.33) (   0.30,-137.14)  205.28                80
 04/20/2018   19:28:32   (  -0.10,-135.36) (  -0.35,-134.19)  133.45                80
 04/21/2018   07:47:16   (   0.10,-135.37) (  -0.77,-139.37)  456.38                80