Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 10 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 10/24/2017   07:16:13   (   0.27,-135.07) (   0.96,-131.97)  352.98                80
 10/24/2017   19:37:28   (  -0.26,-135.06) (   0.18,-137.12)  234.63                80
 10/26/2017   19:27:57   (  -0.26,-134.99) (  -0.44,-134.16)   94.11                80
 10/27/2017   07:49:21   (   0.25,-134.98) (  -0.69,-139.35)  497.52                80
 10/28/2017   19:15:46   (  -0.25,-134.92) (  -1.02,-131.20)  422.12                80
 10/29/2017   07:37:11   (   0.25,-134.91) (  -0.05,-136.40)  169.91                80
 10/31/2017   07:22:21   (   0.25,-134.83) (   0.57,-133.45)  156.93                80
 10/31/2017   19:43:36   (  -0.24,-134.79) (   0.60,-138.60)  433.10                80
 11/02/2017   07:10:11   (   0.25,-134.74) (   1.16,-130.50)  482.89                80
 11/02/2017   19:31:27   (  -0.24,-134.71) (  -0.04,-135.65)  107.12                80
 11/04/2017   19:21:58   (  -0.24,-134.62) (  -0.66,-132.70)  217.78                80
 11/05/2017   07:43:21   (   0.23,-134.61) (  -0.49,-137.89)  373.29                80