Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 7 17.  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) (   0.07,-134.83)   36.15                80
 07/20/2017   07:16:12   (   0.02,-135.09) (   0.70,-131.88)  365.34                80
 07/20/2017   19:40:07   (   0.01,-135.14) (   0.39,-137.04)  215.05                80
 07/22/2017   19:25:18   (  -0.00,-135.08) (  -0.24,-134.09)  113.31                80
 07/23/2017   07:49:20   (  -0.03,-134.99) (  -0.95,-139.26)  485.38                80
 07/24/2017   19:13:07   (  -0.01,-135.01) (  -0.81,-131.12)  441.29                80
 07/25/2017   07:37:10   (  -0.02,-134.93) (  -0.32,-136.31)  157.44                80
 07/27/2017   07:22:20   (  -0.01,-134.86) (   0.32,-133.36)  170.27                80
 07/27/2017   19:46:16   (   0.04,-134.90) (   0.78,-138.52)  410.60                80
 07/29/2017   07:10:11   (  -0.00,-134.78) (   0.95,-130.41)  497.80                80
 07/29/2017   19:34:05   (   0.04,-134.83) (   0.21,-135.56)   83.13                80