Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 12 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/15/2017   19:12:54   (  -0.10,-135.38) (  -1.03,-131.10)  487.93                80
 12/16/2017   07:36:56   (   0.08,-135.44) (  -0.12,-136.28)   95.53                80
 12/18/2017   07:22:04   (   0.09,-135.43) (   0.54,-133.32)  240.09                80
 12/18/2017   19:45:59   (  -0.07,-135.36) (   0.59,-138.47)  353.12                80
 12/20/2017   19:33:46   (  -0.07,-135.35) (  -0.01,-135.50)   18.36                80
 12/22/2017   19:18:54   (  -0.07,-135.33) (  -0.67,-132.55)  316.45                80
 12/23/2017   07:42:57   (   0.06,-135.39) (  -0.47,-137.73)  266.84                80
 12/25/2017   07:28:05   (   0.06,-135.36) (   0.19,-134.77)   66.99                80
 12/27/2017   07:15:52   (   0.06,-135.33) (   0.80,-131.80)  400.18                80
 12/27/2017   19:39:47   (  -0.05,-135.25) (   0.33,-136.95)  194.31                80