Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 6 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/10/2016   10:38:00   (  -0.02,-135.25) (   0.63,-138.24)  340.63                80
 06/11/2016   10:21:54   (  -0.01,-135.28) (  -0.35,-133.71)  179.03                80
 06/12/2016   22:41:12   (   0.03,-135.30) (  -0.78,-139.02)  424.29                80
 06/13/2016   22:25:06   (   0.02,-135.32) (   0.19,-134.48)   95.10                80
 06/15/2016   10:44:14   (  -0.04,-135.38) (   0.92,-139.77)  499.21                80
 06/16/2016   10:28:09   (  -0.03,-135.40) (  -0.06,-135.23)   19.87                80
 06/18/2016   22:28:41   (   0.05,-135.43) (  -0.09,-136.01)   66.12                80
 06/19/2016   22:12:36   (   0.04,-135.44) (   0.95,-131.48)  452.25                80
 06/21/2016   10:31:44   (  -0.06,-135.49) (   0.22,-136.75)  143.68                80
 06/22/2016   10:15:38   (  -0.05,-135.50) (  -0.76,-132.21)  374.32                80