Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 4 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/23/2012   10:29:50   (   0.04,-134.91) (   0.45,-136.79)  214.19                80
 04/24/2012   10:13:45   (   0.05,-134.94) (  -0.54,-132.25)  306.36                80
 04/25/2012   22:33:01   (  -0.03,-135.01) (  -0.60,-137.57)  290.67                80
 04/26/2012   22:16:56   (  -0.04,-135.05) (   0.40,-133.03)  229.60                80
 04/28/2012   10:36:03   (   0.03,-135.08) (   0.75,-138.30)  367.92                80
 04/29/2012   10:19:57   (   0.04,-135.10) (  -0.25,-133.77)  151.97                80
 04/30/2012   22:39:14   (  -0.02,-135.16) (  -0.89,-139.08)  446.29                80
 05/01/2012   22:23:08   (  -0.03,-135.19) (   0.11,-134.55)   73.31                80
 05/04/2012   10:23:30   (   0.02,-135.23) (   0.03,-135.29)    6.23                80