Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 4 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/11/2018   19:34:32   (  -0.08,-135.17) (  -0.01,-135.63)   52.64                80
 04/13/2018   19:22:23   (  -0.08,-135.22) (  -0.65,-132.69)  288.71                80
 04/14/2018   07:41:06   (   0.08,-135.24) (  -0.50,-137.87)  300.45                80
 04/16/2018   07:31:37   (   0.08,-135.28) (   0.13,-134.93)   40.11                80
 04/18/2018   07:19:28   (   0.09,-135.32) (   0.77,-131.98)  379.58                80
 04/18/2018   19:40:45   (  -0.09,-135.33) (   0.28,-137.15)  206.22                80
 04/20/2018   19:28:36   (  -0.10,-135.36) (  -0.36,-134.21)  132.07                80
 04/21/2018   07:47:20   (   0.10,-135.37) (  -0.78,-139.39)  458.02                80
 04/22/2018   19:16:27   (  -0.10,-135.39) (  -1.00,-131.26)  469.60                80
 04/23/2018   07:35:11   (   0.11,-135.39) (  -0.14,-136.45)  120.56                80