Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 9 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)
 09/25/2018   07:17:12   (   0.32,-135.55) (   1.05,-132.17)  384.55                80
 09/25/2018   19:38:28   (  -0.33,-135.60) (   0.00,-137.34)  196.14                80
 09/27/2018   19:28:55   (  -0.33,-135.63) (  -0.59,-134.37)  142.88                80
 09/28/2018   07:50:19   (   0.34,-135.59) (  -0.51,-139.56)  451.45                80
 09/29/2018   19:16:43   (  -0.33,-135.64) (  -1.24,-131.42)  481.09                80
 09/30/2018   07:38:07   (   0.34,-135.60) (   0.14,-136.61)  113.67                80
 10/02/2018   07:23:14   (   0.33,-135.61) (   0.74,-133.64)  223.19                80
 10/02/2018   19:44:30   (  -0.34,-135.64) (   0.31,-138.81)  359.71                80
 10/04/2018   19:32:17   (  -0.33,-135.64) (  -0.28,-135.84)   23.48                80
 10/06/2018   19:22:45   (  -0.33,-135.63) (  -0.94,-132.89)  312.31                80