Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 12 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/11/2017   07:16:03   (   0.11,-135.43) (   0.89,-131.87)  405.99                80
 12/11/2017   19:39:58   (  -0.09,-135.38) (   0.24,-137.02)  185.67                80
 12/13/2017   19:25:06   (  -0.10,-135.39) (  -0.41,-134.06)  151.87                80
 12/14/2017   07:49:09   (   0.08,-135.45) (  -0.75,-139.24)  431.36                80
 12/15/2017   19:15:33   (  -0.10,-135.39) (  -0.99,-131.09)  488.78                80
 12/16/2017   07:36:57   (   0.08,-135.45) (  -0.11,-136.28)   94.71                80
 12/18/2017   07:22:05   (   0.09,-135.44) (   0.53,-133.32)  241.30                80
 12/18/2017   19:46:00   (  -0.07,-135.38) (   0.59,-138.47)  351.71                80
 12/20/2017   19:31:08   (  -0.07,-135.37) (  -0.04,-135.51)   16.31                80
 12/22/2017   19:21:36   (  -0.07,-135.35) (  -0.68,-132.55)  318.57                80
 12/23/2017   07:43:00   (   0.06,-135.41) (  -0.41,-137.74)  264.68                80