Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 1 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 01/12/2018   07:16:02   (   0.01,-134.82) (   0.65,-131.81)  342.94                80
 01/12/2018   19:39:57   (  -0.00,-134.75) (   0.48,-136.96)  251.10                80
 01/14/2018   19:25:06   (  -0.01,-134.66) (  -0.17,-134.01)   75.64                80
 01/16/2018   19:12:54   (  -0.01,-134.57) (  -0.76,-131.04)  401.74                80
 01/17/2018   07:36:58   (   0.00,-134.60) (  -0.35,-136.23)  185.52                80
 01/19/2018   07:22:06   (   0.00,-134.50) (   0.24,-133.26)  140.13                80
 01/19/2018   19:46:02   (   0.01,-134.42) (   0.83,-138.43)  454.51                80
 01/21/2018   07:09:55   (  -0.00,-134.40) (   0.89,-130.31)  465.29                80
 01/21/2018   19:33:50   (   0.01,-134.32) (   0.24,-135.46)  129.48                80
 01/23/2018   19:18:58   (   0.01,-134.21) (  -0.35,-132.50)  194.90                80
 01/24/2018   07:40:22   (  -0.02,-134.23) (  -0.76,-137.68)  392.88                80