Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 5 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 05/23/2018   07:50:25   (   0.15,-135.22) (  -0.74,-139.49)  485.84                80
 05/24/2018   19:14:10   (  -0.16,-135.21) (  -0.98,-131.35)  438.98                80
 05/25/2018   07:38:14   (   0.15,-135.16) (  -0.16,-136.53)  155.94                80
 05/27/2018   07:23:24   (   0.15,-135.11) (   0.48,-133.58)  173.58                80
 05/27/2018   19:47:19   (  -0.14,-135.12) (   0.61,-138.74)  411.15                80
 05/29/2018   19:35:09   (  -0.14,-135.06) (   0.04,-135.78)   82.45                80
 05/31/2018   19:20:19   (  -0.15,-134.99) (  -0.60,-132.83)  245.66                80
 06/01/2018   07:44:22   (   0.14,-134.95) (  -0.54,-138.02)  349.80                80
 06/03/2018   07:32:12   (   0.15,-134.87) (   0.10,-135.07)   22.44                80
 06/05/2018   07:17:23   (   0.16,-134.80) (   0.74,-132.12)  304.44                80
 06/05/2018   19:41:18   (  -0.14,-134.80) (   0.36,-137.28)  280.83                80