Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 1 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 01/03/2018   07:22:09   (   0.03,-135.14) (   0.42,-133.31)  208.17                80
 01/03/2018   19:46:04   (  -0.02,-135.07) (   0.73,-138.45)  385.62                80
 01/05/2018   19:33:53   (  -0.02,-135.01) (   0.10,-135.50)   55.84                80
 01/07/2018   19:21:42   (  -0.02,-134.95) (  -0.52,-132.54)  273.78                80
 01/08/2018   07:43:05   (   0.01,-134.99) (  -0.59,-137.73)  311.81                80
 01/10/2018   07:28:15   (   0.01,-134.93) (   0.03,-134.77)   17.30                80
 01/12/2018   07:16:04   (   0.02,-134.86) (   0.64,-131.81)  345.57                80
 01/12/2018   19:37:19   (  -0.01,-134.78) (   0.45,-136.97)  249.15                80
 01/14/2018   19:27:48   (  -0.01,-134.70) (  -0.16,-134.02)   78.49                80
 01/16/2018   19:15:37   (  -0.01,-134.62) (  -0.77,-131.06)  405.55                80