Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 12 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/27/2017   07:16:04   (   0.05,-135.31) (   0.82,-131.85)  394.67                80
 12/27/2017   19:39:58   (  -0.04,-135.24) (   0.32,-136.99)  199.63                80
 12/29/2017   19:25:07   (  -0.05,-135.19) (  -0.31,-134.04)  131.76                80
 12/30/2017   07:49:11   (   0.03,-135.25) (  -0.81,-139.23)  452.25                80
 12/31/2017   19:15:37   (  -0.05,-135.14) (  -0.93,-131.08)  462.23                80
 01/01/2018   07:37:00   (   0.04,-135.20) (  -0.18,-136.27)  122.05                80
 01/03/2018   07:22:09   (   0.04,-135.14) (   0.45,-133.31)  207.57                80
 01/03/2018   19:46:04   (  -0.03,-135.05) (   0.69,-138.46)  387.93                80
 01/05/2018   19:33:52   (  -0.02,-134.99) (   0.11,-135.50)   58.64                80
 01/07/2018   19:19:04   (  -0.02,-134.92) (  -0.52,-132.54)  270.67                77
 01/08/2018   07:43:05   (   0.01,-134.98) (  -0.59,-137.73)  313.45                80