Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 1 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 01/01/2018   07:37:00   (   0.03,-135.20) (  -0.19,-136.27)  122.07                80
 01/03/2018   07:22:09   (   0.03,-135.14) (   0.45,-133.32)  208.04                80
 01/03/2018   19:46:04   (  -0.02,-135.07) (   0.70,-138.46)  386.05                80
 01/05/2018   19:31:13   (  -0.02,-135.01) (   0.05,-135.51)   56.23                80
 01/07/2018   19:21:41   (  -0.02,-134.95) (  -0.53,-132.54)  273.62                80
 01/08/2018   07:43:05   (   0.01,-134.99) (  -0.57,-137.73)  311.58                80
 01/10/2018   07:28:13   (   0.01,-134.93) (   0.03,-134.77)   17.80                80
 01/12/2018   07:16:02   (   0.02,-134.86) (   0.69,-131.82)  346.37                80
 01/12/2018   19:39:57   (  -0.01,-134.78) (   0.46,-136.97)  248.60                80
 01/14/2018   19:27:45   (  -0.01,-134.70) (  -0.15,-134.00)   79.44                80