Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 11 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/20/2016   22:24:46   (  -0.04,-135.30) (   0.12,-134.55)   85.66                80
 11/23/2016   10:27:50   (   0.03,-135.37) (  -0.02,-135.30)    9.21                80
 11/25/2016   22:28:20   (  -0.02,-135.36) (  -0.20,-136.07)   81.09                80
 11/26/2016   22:12:16   (  -0.03,-135.37) (   0.83,-131.54)  436.65                80
 11/28/2016   10:31:24   (   0.01,-135.42) (   0.30,-136.82)  159.18                80
 11/29/2016   10:15:19   (   0.02,-135.43) (  -0.67,-132.28)  357.96                80
 11/30/2016   22:34:35   (  -0.00,-135.39) (  -0.51,-137.59)  251.09                80
 12/01/2016   22:18:31   (  -0.01,-135.39) (   0.53,-133.06)  265.73                80
 12/03/2016   10:37:38   (  -0.01,-135.43) (   0.67,-138.33)  331.22                80
 12/04/2016   10:21:33   (   0.00,-135.43) (  -0.36,-133.81)  185.04                80