Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2014 1 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)
 01/14/2014   22:42:56   (   0.12,-135.01) (  -0.77,-139.06)  460.94                80
 01/15/2014   22:26:53   (   0.12,-135.05) (   0.25,-134.53)   59.29                80
 01/18/2014   10:29:58   (  -0.12,-135.12) (  -0.11,-135.27)   16.54                80
 01/20/2014   22:30:33   (   0.12,-135.20) (  -0.04,-136.05)   96.15                80
 01/21/2014   22:14:29   (   0.12,-135.22) (   0.93,-131.50)  423.35                80
 01/23/2014   10:36:18   (  -0.12,-135.26) (   0.23,-136.77)  173.19                80
 01/24/2014   10:14:55   (  -0.12,-135.28) (  -0.80,-132.25)  345.65                80
 01/25/2014   22:36:53   (   0.12,-135.31) (  -0.36,-137.55)  255.38                80
 01/26/2014   22:20:48   (   0.11,-135.32) (   0.61,-133.01)  263.07                80