Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 8 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 08/12/2018   19:14:13   (   0.09,-135.25) (  -0.77,-131.35)  443.95                80
 08/13/2018   07:38:16   (  -0.13,-135.18) (  -0.39,-136.52)  152.00                80
 08/15/2018   07:23:24   (  -0.11,-135.13) (   0.22,-133.56)  178.24                80
 08/15/2018   19:47:19   (   0.15,-135.16) (   0.91,-138.71)  403.65                80
 08/17/2018   19:35:07   (   0.15,-135.11) (   0.30,-135.75)   73.81                80
 08/19/2018   19:20:15   (   0.14,-135.04) (  -0.31,-132.79)  255.44                80
 08/20/2018   07:44:18   (  -0.18,-134.98) (  -0.79,-137.98)  340.89                80
 08/22/2018   07:32:07   (  -0.18,-134.91) (  -0.19,-135.02)   12.47                80
 08/24/2018   07:17:15   (  -0.17,-134.84) (   0.42,-132.06)  315.59                80
 08/24/2018   19:41:09   (   0.21,-134.86) (   0.71,-137.21)  267.05                80