Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2015 6 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 06/18/2015   07:37:48   (   0.07,-134.30) (  -0.39,-136.43)  242.10                80
 06/20/2015   07:23:00   (   0.08,-134.19) (   0.24,-133.49)   80.43                80
 06/22/2015   07:10:53   (   0.09,-134.08) (   0.84,-130.55)  402.11                80
 06/22/2015   19:34:49   (  -0.07,-134.05) (   0.31,-135.70)  187.50                80
 06/24/2015   19:20:04   (  -0.08,-133.94) (  -0.33,-132.77)  133.01                80
 06/25/2015   07:44:10   (   0.06,-133.91) (  -0.79,-137.96)  461.20                80
 06/26/2015   19:08:00   (  -0.08,-133.81) (  -0.94,-129.84)  452.36                80
 06/27/2015   07:32:06   (   0.06,-133.78) (  -0.19,-135.03)  142.19                80
 06/29/2015   07:17:23   (   0.07,-133.65) (   0.39,-132.11)  175.47                80
 06/29/2015   19:41:21   (  -0.05,-133.61) (   0.70,-137.27)  415.41                80
 07/01/2015   07:05:21   (   0.07,-133.51) (   0.96,-129.18)  491.72                80
 07/01/2015   19:29:19   (  -0.05,-133.47) (   0.16,-134.34)   99.51                80