Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 7 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 07/18/2017   07:28:22   (   0.02,-135.15) (   0.08,-134.83)   36.00                80
 07/20/2017   07:16:12   (   0.02,-135.09) (   0.72,-131.88)  365.18                80
 07/20/2017   19:40:07   (   0.01,-135.14) (   0.43,-137.03)  215.25                80
 07/22/2017   19:25:17   (  -0.00,-135.07) (  -0.21,-134.08)  113.08                80
 07/23/2017   07:49:20   (  -0.03,-134.99) (  -0.91,-139.27)  485.55                80
 07/24/2017   19:13:07   (  -0.01,-135.01) (  -0.86,-131.13)  441.10                80
 07/25/2017   07:37:10   (  -0.02,-134.92) (  -0.32,-136.31)  157.59                80
 07/27/2017   07:22:20   (  -0.01,-134.85) (   0.33,-133.36)  170.18                80
 07/27/2017   19:46:14   (   0.04,-134.90) (   0.82,-138.51)  410.73                80
 07/29/2017   07:10:09   (  -0.00,-134.78) (   0.93,-130.40)  497.76                80
 07/29/2017   19:34:03   (   0.04,-134.82) (   0.22,-135.55)   83.24                80