Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 9 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/03/2016   10:46:13   (   0.36,-135.36) (   1.28,-139.58)  481.21                80
 09/04/2016   10:24:47   (   0.36,-135.37) (   0.27,-135.05)   37.27                80
 09/06/2016   22:27:57   (  -0.35,-135.39) (  -0.44,-135.81)   47.69                80
 09/07/2016   22:11:51   (  -0.35,-135.41) (   0.56,-131.28)  470.64                80
 09/09/2016   10:33:39   (   0.35,-135.45) (   0.59,-136.55)  125.87                80
 09/10/2016   10:12:13   (   0.35,-135.45) (  -0.42,-132.02)  391.63                80
 09/11/2016   22:34:09   (  -0.34,-135.44) (  -0.75,-137.32)  213.86                80
 09/12/2016   22:18:03   (  -0.34,-135.45) (   0.26,-132.78)  303.62                80
 09/14/2016   10:39:50   (   0.32,-135.48) (   0.89,-138.06)  293.57                80
 09/15/2016   10:18:25   (   0.33,-135.48) (  -0.12,-133.52)  223.26                80