Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 9 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)
 09/20/2018   19:22:53   (  -0.31,-135.53) (  -0.87,-132.89)  299.48                80
 09/21/2018   07:44:17   (   0.33,-135.49) (  -0.23,-138.08)  295.10                80
 09/23/2018   07:29:25   (   0.32,-135.52) (   0.42,-135.13)   45.01                80
 09/25/2018   07:17:12   (   0.32,-135.55) (   1.01,-132.17)  384.59                80
 09/25/2018   19:38:27   (  -0.33,-135.60) (   0.04,-137.33)  196.91                80
 09/27/2018   19:28:56   (  -0.33,-135.62) (  -0.62,-134.38)  142.07                80
 09/28/2018   07:50:19   (   0.34,-135.60) (  -0.48,-139.57)  451.45                80
 09/29/2018   19:16:43   (  -0.33,-135.64) (  -1.22,-131.41)  480.25                80
 09/30/2018   07:38:06   (   0.34,-135.61) (   0.12,-136.61)  113.67                80
 10/02/2018   07:23:13   (   0.33,-135.61) (   0.72,-133.64)  223.18                80
 10/02/2018   19:44:29   (  -0.34,-135.63) (   0.33,-138.81)  360.54                80