Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2015 6 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 06/22/2015   07:10:51   (   0.09,-134.48) (   0.93,-130.55)  447.59                80
 06/22/2015   19:34:46   (  -0.07,-134.47) (   0.16,-135.71)  140.13                80
 06/24/2015   19:19:56   (  -0.08,-134.55) (  -0.44,-132.75)  204.22                80
 06/25/2015   07:44:01   (   0.06,-134.61) (  -0.66,-137.95)  379.67                80
 06/27/2015   07:31:52   (   0.06,-134.69) (   0.01,-135.01)   36.04                80
 06/29/2015   07:17:02   (   0.07,-134.76) (   0.63,-132.05)  306.90                80
 06/29/2015   19:40:58   (  -0.05,-134.74) (   0.45,-137.21)  281.27                80
 07/01/2015   19:26:08   (  -0.06,-134.80) (  -0.17,-134.26)   60.62                80
 07/03/2015   19:13:58   (  -0.07,-134.85) (  -0.81,-131.31)  401.84                80
 07/04/2015   07:38:03   (   0.04,-134.90) (  -0.27,-136.51)  182.80                80