Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 4 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/16/2016   22:12:34   (  -0.06,-135.39) (   0.85,-131.39)  455.62                80
 04/18/2016   10:34:23   (   0.06,-135.40) (   0.33,-136.67)  143.84                80
 04/19/2016   10:12:58   (   0.06,-135.40) (  -0.67,-132.14)  372.47                80
 04/20/2016   22:34:55   (  -0.06,-135.39) (  -0.52,-137.44)  233.34                80
 04/21/2016   22:18:50   (  -0.06,-135.39) (   0.49,-132.91)  282.90                80
 04/23/2016   10:40:38   (   0.06,-135.40) (   0.69,-138.18)  317.18                80
 04/24/2016   10:19:14   (   0.06,-135.40) (  -0.32,-133.65)  198.39                80
 04/25/2016   22:41:10   (  -0.06,-135.37) (  -0.87,-138.96)  409.13                80
 04/26/2016   22:25:06   (  -0.06,-135.36) (   0.14,-134.43)  106.25                80
 04/28/2016   10:46:54   (   0.06,-135.36) (   1.03,-139.70)  494.84                80
 04/29/2016   10:25:30   (   0.07,-135.35) (   0.02,-135.17)   19.93                80