Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 12 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/05/2016   22:40:50   (   0.02,-135.34) (  -0.79,-139.12)  429.22                80
 12/06/2016   22:24:45   (   0.01,-135.34) (   0.18,-134.58)   86.57                80
 12/09/2016   10:27:47   (  -0.02,-135.35) (  -0.03,-135.32)    3.44                80
 12/11/2016   22:28:18   (   0.03,-135.27) (  -0.15,-136.09)   93.14                80
 12/12/2016   22:12:13   (   0.02,-135.26) (   0.84,-131.55)  421.65                80
 12/14/2016   10:31:21   (  -0.03,-135.27) (   0.29,-136.84)  178.42                80
 12/15/2016   10:15:16   (  -0.02,-135.24) (  -0.69,-132.30)  335.97                80
 12/16/2016   22:34:31   (   0.04,-135.17) (  -0.50,-137.60)  276.86                80
 12/17/2016   22:18:25   (   0.03,-135.15) (   0.49,-133.06)  237.36                80