Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 11 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/13/2015   22:20:27   (  -0.07,-135.37) (   0.47,-132.95)  275.51                80
 11/15/2015   10:39:35   (   0.04,-135.41) (   0.65,-138.24)  321.78                80
 11/16/2015   10:23:30   (   0.06,-135.42) (  -0.32,-133.70)  196.03                80
 11/17/2015   22:42:46   (  -0.03,-135.42) (  -0.85,-139.01)  409.85                80
 11/18/2015   22:26:42   (  -0.04,-135.43) (   0.19,-134.49)  107.92                80
 11/20/2015   10:45:49   (   0.01,-135.47) (   0.99,-139.76)  489.90                80
 11/21/2015   10:29:44   (   0.02,-135.47) (  -0.05,-135.24)   27.31                80
 11/23/2015   22:30:15   (  -0.02,-135.46) (  -0.13,-136.02)   63.06                80
 11/24/2015   22:14:10   (  -0.03,-135.46) (   0.86,-131.48)  453.91                80
 11/26/2015   10:33:18   (   0.01,-135.49) (   0.26,-136.77)  144.96                80
 11/27/2015   10:17:13   (   0.02,-135.48) (  -0.72,-132.23)  371.34                80