Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 12 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/29/2017   19:25:42   (  -0.04,-135.20) (  -0.28,-134.03)  132.14                45
 12/30/2017   07:49:11   (   0.03,-135.25) (  -0.84,-139.22)  452.15                80
 12/31/2017   19:15:36   (  -0.05,-135.15) (  -0.90,-131.08)  462.75                80
 01/01/2018   07:37:00   (   0.04,-135.20) (  -0.22,-136.26)  121.87                80
 01/03/2018   07:22:09   (   0.04,-135.14) (   0.40,-133.31)  207.91                80
 01/03/2018   19:46:05   (  -0.03,-135.06) (   0.69,-138.47)  387.28                80
 01/05/2018   19:31:14   (  -0.02,-135.00) (   0.07,-135.51)   57.84                80
 01/07/2018   19:21:43   (  -0.02,-134.94) (  -0.54,-132.55)  271.43                80
 01/08/2018   07:43:07   (   0.01,-134.99) (  -0.58,-137.74)  312.95                80
 01/10/2018   07:28:16   (   0.02,-134.92) (   0.04,-134.78)   15.76                80