Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 12 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/09/2017   07:28:15   (   0.11,-135.42) (   0.24,-134.83)   68.04                80
 12/11/2017   07:16:03   (   0.11,-135.44) (   0.90,-131.87)  406.43                80
 12/11/2017   19:37:18   (  -0.10,-135.39) (   0.22,-137.02)  185.23                80
 12/13/2017   19:27:45   (  -0.10,-135.40) (  -0.39,-134.05)  152.92                80
 12/14/2017   07:49:08   (   0.08,-135.46) (  -0.75,-139.23)  429.95                80
 12/15/2017   19:15:32   (  -0.10,-135.40) (  -1.02,-131.09)  490.55                80
 12/16/2017   07:36:56   (   0.09,-135.46) (  -0.06,-136.28)   92.62                80
 12/18/2017   07:22:02   (   0.09,-135.46) (   0.52,-133.31)  244.24                80
 12/18/2017   19:45:57   (  -0.07,-135.39) (   0.60,-138.46)  348.76                80
 12/20/2017   19:31:04   (  -0.07,-135.39) (  -0.05,-135.49)   12.43                80
 12/22/2017   19:21:30   (  -0.07,-135.37) (  -0.65,-132.52)  323.47                80