Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2016 12 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/22/2016   07:28:18   (   0.06,-135.07) (   0.12,-134.84)   26.77                80
 12/24/2016   07:16:06   (   0.07,-135.01) (   0.74,-131.88)  356.62                80
 12/24/2016   19:40:01   (  -0.05,-134.99) (   0.39,-137.03)  231.66                80
 12/26/2016   19:25:09   (  -0.06,-134.93) (  -0.25,-134.07)   97.49                80
 12/27/2016   07:49:12   (   0.04,-134.91) (  -0.90,-139.25)  493.56                80
 12/28/2016   19:12:56   (  -0.06,-134.85) (  -0.83,-131.10)  426.04                80
 12/29/2016   07:37:00   (   0.04,-134.84) (  -0.26,-136.29)  165.24                80
 12/31/2016   07:22:07   (   0.04,-134.76) (   0.33,-133.33)  162.51                80
 12/31/2016   19:46:02   (  -0.03,-134.73) (   0.79,-138.48)  426.87                80
 01/02/2017   07:09:54   (   0.04,-134.67) (   0.93,-130.36)  489.79                80
 01/02/2017   19:31:10   (  -0.03,-134.64) (   0.13,-135.52)   99.71                80