Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 7 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/15/2012   22:16:03   (   0.29,-135.38) (   0.81,-132.98)  274.02                80
 07/17/2012   10:35:11   (  -0.31,-135.39) (   0.36,-138.25)  326.34                80
 07/18/2012   10:19:07   (  -0.30,-135.39) (  -0.66,-133.72)  189.96                80
 07/19/2012   22:38:23   (   0.32,-135.38) (  -0.51,-139.03)  416.69                80
 07/20/2012   22:22:18   (   0.31,-135.37) (   0.51,-134.50)   99.47                80
 07/23/2012   10:25:22   (  -0.32,-135.37) (  -0.37,-135.25)   14.46                80
 07/25/2012   22:25:53   (   0.33,-135.33) (   0.18,-136.02)   78.32                80
 07/26/2012   22:09:49   (   0.33,-135.32) (   1.22,-131.50)  436.71                80
 07/28/2012   10:28:56   (  -0.35,-135.31) (  -0.01,-136.76)  165.83                80
 07/29/2012   10:12:51   (  -0.35,-135.29) (  -1.04,-132.23)  348.59                80