Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 9 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/28/2016   22:18:19   (  -0.28,-135.38) (   0.30,-132.86)  288.16                80
 09/30/2016   10:37:28   (   0.26,-135.40) (   0.87,-138.13)  310.91                80
 10/01/2016   10:21:25   (   0.27,-135.40) (  -0.16,-133.61)  204.90                80
 10/02/2016   22:40:42   (  -0.25,-135.37) (  -1.06,-138.91)  404.57                80
 10/03/2016   22:24:39   (  -0.26,-135.36) (  -0.04,-134.39)  111.21                80
 10/05/2016   10:43:48   (   0.24,-135.38) (   1.20,-139.67)  488.21                80
 10/06/2016   10:27:45   (   0.25,-135.37) (   0.17,-135.14)   26.93                80
 10/08/2016   22:28:18   (  -0.24,-135.31) (  -0.36,-135.92)   69.89                80
 10/09/2016   22:12:14   (  -0.25,-135.29) (   0.61,-131.39)  444.83                80
 10/11/2016   10:31:23   (   0.22,-135.30) (   0.55,-136.66)  155.95                80