Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 8 31.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/31/2016   22:40:31   (  -0.36,-135.29) (  -1.13,-138.85)  404.99                80
 09/01/2016   22:24:25   (  -0.36,-135.31) (  -0.12,-134.31)  114.22                80
 09/03/2016   10:46:12   (   0.35,-135.36) (   1.28,-139.58)  481.14                80
 09/04/2016   10:24:47   (   0.36,-135.37) (   0.28,-135.05)   37.43                80
 09/06/2016   22:27:57   (  -0.35,-135.40) (  -0.45,-135.81)   46.96                80
 09/07/2016   22:11:51   (  -0.35,-135.42) (   0.56,-131.28)  471.49                80
 09/09/2016   10:33:39   (   0.34,-135.45) (   0.59,-136.55)  125.13                80
 09/10/2016   10:12:13   (   0.35,-135.46) (  -0.41,-132.02)  392.48                80
 09/11/2016   22:34:09   (  -0.33,-135.45) (  -0.76,-137.32)  212.58                80
 09/12/2016   22:18:03   (  -0.34,-135.46) (   0.25,-132.78)  305.01                80
 09/14/2016   10:39:50   (   0.32,-135.49) (   0.90,-138.06)  292.28                80