Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 11 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/18/2016   10:21:34   (   0.06,-135.30) (  -0.29,-133.77)  174.57                80
 11/19/2016   22:40:50   (  -0.03,-135.28) (  -0.91,-139.07)  432.71                80
 11/20/2016   22:24:46   (  -0.04,-135.30) (   0.12,-134.55)   85.69                80
 11/23/2016   10:27:49   (   0.03,-135.38) (  -0.01,-135.30)    9.99                80
 11/25/2016   22:28:21   (  -0.02,-135.37) (  -0.15,-136.08)   80.23                80
 11/26/2016   22:12:16   (  -0.03,-135.38) (   0.82,-131.54)  437.70                80
 11/28/2016   10:31:24   (   0.01,-135.44) (   0.32,-136.82)  157.27                80
 11/29/2016   10:15:20   (   0.02,-135.45) (  -0.71,-132.29)  360.03                80
 11/30/2016   22:34:36   (  -0.00,-135.41) (  -0.47,-137.60)  249.40                80