Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 9 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/22/2017   07:16:28   (   0.28,-135.35) (   1.02,-132.02)  379.12                80
 09/22/2017   19:37:43   (  -0.30,-135.39) (   0.10,-137.17)  202.71                80
 09/24/2017   19:28:12   (  -0.29,-135.41) (  -0.57,-134.22)  136.21                80
 09/25/2017   07:49:36   (   0.30,-135.39) (  -0.53,-139.41)  456.89                80
 09/26/2017   19:16:00   (  -0.29,-135.43) (  -1.19,-131.26)  474.50                80
 09/27/2017   07:37:24   (   0.30,-135.41) (   0.09,-136.46)  118.93                80
 09/29/2017   07:22:32   (   0.29,-135.41) (   0.71,-133.50)  218.40                80
 09/29/2017   19:43:47   (  -0.30,-135.44) (   0.41,-138.65)  365.54                80
 10/01/2017   19:31:35   (  -0.29,-135.44) (  -0.21,-135.69)   28.84                80
 10/03/2017   19:22:03   (  -0.29,-135.44) (  -0.84,-132.73)  307.51                80
 10/04/2017   07:43:27   (   0.29,-135.42) (  -0.26,-137.92)  284.65                80