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

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/12/2015   22:36:32   (  -0.06,-135.35) (  -0.55,-137.48)  243.41                80
 11/13/2015   22:20:27   (  -0.07,-135.37) (   0.48,-132.96)  275.25                80
 11/15/2015   10:39:34   (   0.04,-135.41) (   0.70,-138.23)  321.80                80
 11/16/2015   10:23:30   (   0.06,-135.42) (  -0.33,-133.71)  196.01                80
 11/17/2015   22:42:46   (  -0.03,-135.42) (  -0.84,-139.02)  410.14                80
 11/18/2015   22:26:42   (  -0.04,-135.43) (   0.19,-134.49)  107.63                80
 11/20/2015   10:45:49   (   0.01,-135.47) (   0.99,-139.76)  489.99                80
 11/21/2015   10:29:45   (   0.03,-135.47) (  -0.05,-135.24)   27.19                80
 11/23/2015   22:30:15   (  -0.02,-135.46) (  -0.13,-136.02)   63.46                80
 11/24/2015   22:14:10   (  -0.03,-135.46) (   0.85,-131.48)  453.47                80