Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 9 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)
 09/11/2012   22:25:32   (  -0.36,-134.91) (  -0.58,-135.86)  108.01                80
 09/12/2012   22:09:28   (  -0.36,-134.95) (   0.48,-131.34)  412.53                80
 09/14/2012   10:28:34   (   0.34,-135.03) (   0.72,-136.60)  179.80                80
 09/15/2012   10:12:30   (   0.35,-135.06) (  -0.34,-132.08)  340.24                80
 09/16/2012   22:31:45   (  -0.33,-135.07) (  -0.86,-137.37)  263.09                80
 09/17/2012   22:15:39   (  -0.34,-135.10) (   0.14,-132.84)  256.81                80
 09/19/2012   10:34:47   (   0.32,-135.17) (   0.98,-138.12)  336.30                80
 09/20/2012   10:18:41   (   0.33,-135.19) (  -0.03,-133.58)  182.76                80
 09/21/2012   22:37:57   (  -0.30,-135.18) (  -1.15,-138.89)  422.73                80
 09/22/2012   22:21:51   (  -0.31,-135.20) (  -0.14,-134.35)   96.19                80
 09/24/2012   10:40:58   (   0.28,-135.26) (   1.25,-139.63)  497.68                80
 09/25/2012   10:24:53   (   0.29,-135.28) (   0.23,-135.10)   21.09                80