Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 7 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/12/2016   10:37:53   (  -0.15,-135.46) (   0.48,-138.26)  320.17                80
 07/13/2016   10:21:48   (  -0.14,-135.44) (  -0.50,-133.73)  194.96                80
 07/14/2016   22:41:04   (   0.17,-135.41) (  -0.66,-139.03)  413.80                80
 07/15/2016   22:25:00   (   0.16,-135.39) (   0.38,-134.51)  100.92                80
 07/18/2016   10:28:02   (  -0.18,-135.34) (  -0.21,-135.24)   11.78                80
 07/20/2016   22:28:32   (   0.19,-135.27) (   0.04,-136.01)   84.44                80
 07/21/2016   22:12:27   (   0.18,-135.24) (   1.03,-131.48)  429.32                80
 07/23/2016   10:31:34   (  -0.20,-135.20) (   0.13,-136.75)  175.49                80
 07/24/2016   10:15:29   (  -0.19,-135.17) (  -0.86,-132.21)  337.88                80