Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 9 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/06/2012   22:21:59   (  -0.38,-134.72) (  -0.27,-134.35)   43.49                80
 09/09/2012   10:24:00   (   0.37,-134.85) (   0.42,-135.08)   26.72                19
 09/10/2012   10:03:35   (   0.38,-134.89) (  -0.57,-130.55)  493.78                80
 09/11/2012   22:25:32   (  -0.36,-134.91) (  -0.57,-135.86)  108.47                80
 09/12/2012   22:09:26   (  -0.36,-134.94) (   0.44,-131.33)  412.13                80
 09/14/2012   10:28:34   (   0.34,-135.03) (   0.69,-136.60)  179.45                80
 09/15/2012   10:12:28   (   0.35,-135.06) (  -0.32,-132.07)  340.63                80
 09/16/2012   22:31:43   (  -0.33,-135.06) (  -0.86,-137.37)  263.16                80
 09/17/2012   22:15:38   (  -0.34,-135.09) (   0.16,-132.84)  256.84                80
 09/19/2012   10:34:44   (   0.32,-135.17) (   1.00,-138.11)  335.50                80
 09/20/2012   10:18:39   (   0.33,-135.19) (  -0.02,-133.57)  183.68                80