Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 12 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/13/2017   19:27:45   (  -0.09,-135.39) (  -0.35,-134.05)  152.02                80
 12/14/2017   07:49:09   (   0.08,-135.45) (  -0.74,-139.24)  431.03                80
 12/15/2017   19:15:33   (  -0.10,-135.39) (  -0.99,-131.09)  489.02                80
 12/16/2017   07:36:57   (   0.08,-135.45) (  -0.10,-136.28)   94.28                80
 12/18/2017   07:22:05   (   0.09,-135.45) (   0.55,-133.32)  241.81                80
 12/18/2017   19:46:00   (  -0.07,-135.38) (   0.58,-138.47)  351.36                80
 12/20/2017   19:31:08   (  -0.07,-135.37) (  -0.06,-135.51)   15.97                80
 12/22/2017   19:21:35   (  -0.07,-135.35) (  -0.64,-132.54)  319.17                80
 12/23/2017   07:42:59   (   0.06,-135.42) (  -0.45,-137.73)  263.82                80
 12/25/2017   07:28:07   (   0.06,-135.39) (   0.20,-134.78)   70.39                80