Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 9 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/01/2017   19:22:07   (  -0.23,-135.09) (  -0.73,-132.71)  270.70                80
 09/02/2017   07:43:32   (   0.26,-135.01) (  -0.33,-137.91)  328.45                80
 09/04/2017   07:31:21   (   0.25,-134.99) (   0.29,-134.95)    6.13                80
 09/06/2017   07:16:29   (   0.25,-134.97) (   0.85,-131.98)  338.39                80
 09/06/2017   19:37:46   (  -0.27,-135.03) (   0.17,-137.16)  242.26                80
 09/08/2017   19:28:15   (  -0.27,-134.99) (  -0.45,-134.20)   90.21                80
 09/10/2017   19:16:04   (  -0.26,-134.96) (  -1.06,-131.25)  422.01                80
 09/11/2017   07:37:28   (   0.28,-134.89) (  -0.06,-136.44)  176.29                80
 09/13/2017   07:22:37   (   0.27,-134.84) (   0.55,-133.48)  154.23                80
 09/13/2017   19:43:52   (  -0.29,-134.87) (   0.54,-138.64)  428.87                80