Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 9 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 10/01/2017   19:31:35   (  -0.29,-135.43) (  -0.22,-135.69)   29.87                80
 10/03/2017   19:22:03   (  -0.29,-135.43) (  -0.86,-132.73)  306.11                80
 10/04/2017   07:43:26   (   0.30,-135.41) (  -0.24,-137.93)  286.29                80
 10/06/2017   07:28:35   (   0.29,-135.40) (   0.41,-134.97)   48.76                80
 10/08/2017   07:16:22   (   0.29,-135.38) (   1.01,-132.01)  382.92                80
 10/08/2017   19:37:37   (  -0.30,-135.38) (   0.06,-137.17)  203.07                80
 10/10/2017   19:28:04   (  -0.29,-135.35) (  -0.54,-134.21)  130.35                80
 10/11/2017   07:49:28   (   0.29,-135.34) (  -0.54,-139.40)  460.81                80
 10/12/2017   19:15:51   (  -0.28,-135.32) (  -1.14,-131.24)  463.16                80
 10/13/2017   07:37:15   (   0.28,-135.30) (   0.06,-136.44)  128.32                80