Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 12 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/25/2017   07:28:14   (   0.05,-135.35) (   0.17,-134.80)   62.35                80
 12/27/2017   07:16:03   (   0.05,-135.31) (   0.80,-131.84)  394.64                80
 12/27/2017   19:39:58   (  -0.04,-135.23) (   0.34,-136.99)  199.81                80
 12/29/2017   19:25:07   (  -0.05,-135.19) (  -0.29,-134.03)  131.51                80
 12/30/2017   07:49:11   (   0.03,-135.25) (  -0.83,-139.22)  452.37                80
 12/31/2017   19:15:36   (  -0.05,-135.14) (  -0.93,-131.08)  461.94                80
 01/01/2018   07:37:00   (   0.04,-135.19) (  -0.19,-136.27)  122.21                80
 01/03/2018   07:22:09   (   0.04,-135.13) (   0.45,-133.31)  207.40                80
 01/03/2018   19:46:04   (  -0.03,-135.04) (   0.68,-138.46)  388.24                80
 01/05/2018   19:33:52   (  -0.03,-134.98) (   0.10,-135.50)   58.89                80
 01/07/2018   19:19:01   (  -0.02,-134.92) (  -0.55,-132.54)  270.37                80