Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 9 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/18/2017   07:43:32   (   0.29,-135.28) (  -0.25,-137.93)  300.44                80
 09/20/2017   07:28:40   (   0.29,-135.32) (   0.37,-134.97)   39.67                80
 09/22/2017   07:16:28   (   0.28,-135.35) (   1.00,-132.01)  379.50                80
 09/22/2017   19:37:43   (  -0.30,-135.40) (   0.07,-137.18)  201.88                80
 09/24/2017   19:28:12   (  -0.29,-135.43) (  -0.56,-134.22)  137.56                80
 09/25/2017   07:49:35   (   0.30,-135.40) (  -0.53,-139.41)  455.65                80
 09/26/2017   19:16:00   (  -0.29,-135.45) (  -1.21,-131.27)  476.48                80
 09/27/2017   07:37:22   (   0.30,-135.42) (   0.05,-136.45)  117.09                80
 09/29/2017   07:22:30   (   0.29,-135.43) (   0.71,-133.49)  220.89                80
 09/29/2017   19:43:46   (  -0.30,-135.46) (   0.36,-138.65)  362.58                80
 10/01/2017   19:31:33   (  -0.29,-135.47) (  -0.24,-135.69)   25.05                80