Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 5 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 05/20/2018   07:17:15   (   0.15,-135.29) (   0.83,-132.09)  363.62                80
 05/20/2018   19:41:10   (  -0.15,-135.30) (   0.26,-137.25)  221.40                80
 05/22/2018   19:26:19   (  -0.15,-135.26) (  -0.33,-134.29)  109.01                80
 05/23/2018   07:50:24   (   0.14,-135.22) (  -0.75,-139.49)  485.43                80
 05/24/2018   19:14:10   (  -0.16,-135.21) (  -0.98,-131.35)  439.24                80
 05/25/2018   07:38:13   (   0.15,-135.17) (  -0.15,-136.53)  155.17                80
 05/27/2018   07:23:22   (   0.15,-135.12) (   0.45,-133.57)  174.80                80
 05/27/2018   19:47:18   (  -0.14,-135.13) (   0.63,-138.73)  410.22                80
 05/29/2018   19:35:07   (  -0.14,-135.07) (   0.02,-135.78)   81.00                80
 05/31/2018   19:20:16   (  -0.15,-135.00) (  -0.60,-132.82)  247.60                80
 06/01/2018   07:44:20   (   0.14,-134.96) (  -0.53,-138.01)  347.35                80