Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 9 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/23/2018   07:29:24   (   0.32,-135.52) (   0.38,-135.12)   45.05                80
 09/25/2018   07:17:12   (   0.32,-135.55) (   1.02,-132.16)  384.53                80
 09/25/2018   19:38:28   (  -0.33,-135.60) (   0.03,-137.33)  196.37                80
 09/27/2018   19:28:56   (  -0.33,-135.63) (  -0.61,-134.37)  142.52                80
 09/28/2018   07:50:20   (   0.34,-135.59) (  -0.50,-139.57)  451.62                80
 09/29/2018   19:16:44   (  -0.33,-135.64) (  -1.24,-131.42)  480.59                80
 09/30/2018   07:38:08   (   0.34,-135.60) (   0.14,-136.61)  113.98                80
 10/02/2018   07:23:16   (   0.33,-135.61) (   0.77,-133.65)  222.72                80
 10/02/2018   19:44:31   (  -0.34,-135.64) (   0.34,-138.81)  360.46                80
 10/04/2018   19:32:19   (  -0.33,-135.63) (  -0.29,-135.85)   24.44                80