Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 7 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 07/20/2017   07:16:12   (   0.02,-135.09) (   0.72,-131.88)  365.68                80
 07/20/2017   19:40:07   (   0.01,-135.14) (   0.43,-137.03)  214.72                80
 07/22/2017   19:25:17   (  -0.00,-135.08) (  -0.22,-134.08)  113.83                80
 07/23/2017   07:49:21   (  -0.03,-135.00) (  -0.91,-139.27)  484.75                80
 07/24/2017   19:13:06   (  -0.01,-135.01) (  -0.81,-131.12)  442.09                80
 07/25/2017   07:37:10   (  -0.02,-134.93) (  -0.32,-136.31)  156.54                80
 07/27/2017   07:22:19   (  -0.01,-134.86) (   0.28,-133.35)  171.50                80
 07/27/2017   19:46:14   (   0.04,-134.91) (   0.81,-138.51)  409.31                80
 07/29/2017   07:10:09   (  -0.00,-134.79) (   0.94,-130.40)  499.33                80
 07/29/2017   19:34:03   (   0.04,-134.83) (   0.21,-135.55)   81.53                80
 07/31/2017   19:19:14   (   0.03,-134.76) (  -0.46,-132.60)  245.82                80
 08/01/2017   07:43:16   (  -0.06,-134.67) (  -0.72,-137.78)  352.81                80