Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 1 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)
 01/11/2016   22:13:38   (   0.08,-134.61) (   0.75,-131.46)  358.62                80
 01/13/2016   10:32:45   (  -0.09,-134.73) (   0.38,-136.74)  228.94                80
 01/14/2016   10:16:39   (  -0.08,-134.78) (  -0.64,-132.21)  292.24                80
 01/15/2016   22:35:55   (   0.09,-134.78) (  -0.52,-137.52)  311.60                80
 01/16/2016   22:19:49   (   0.08,-134.82) (   0.50,-132.98)  209.27                80
 01/18/2016   10:38:57   (  -0.09,-134.93) (   0.63,-138.26)  379.11                80
 01/19/2016   10:22:50   (  -0.08,-134.96) (  -0.33,-133.72)  141.43                80
 01/20/2016   22:42:05   (   0.08,-134.96) (  -0.83,-139.03)  463.50                80
 01/21/2016   22:26:00   (   0.08,-134.99) (   0.19,-134.49)   56.70                80
 01/24/2016   10:26:21   (  -0.07,-135.12) (  -0.04,-135.23)   12.56                80