Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 3 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/15/2015   10:39:20   (  -0.01,-135.17) (   0.34,-136.71)  175.60                80
 03/16/2015   10:17:55   (  -0.01,-135.14) (  -0.69,-132.18)  337.41                80
 03/17/2015   22:39:49   (   0.00,-135.09) (  -0.52,-137.48)  272.57                80
 03/18/2015   22:23:43   (   0.01,-135.05) (   0.45,-132.94)  240.61                80
 03/20/2015   10:45:29   (  -0.00,-135.01) (   0.71,-138.21)  364.50                80
 03/21/2015   10:24:03   (  -0.01,-134.98) (  -0.32,-133.68)  147.92                80
 03/22/2015   22:45:58   (   0.00,-134.91) (  -0.88,-138.98)  463.70                80
 03/23/2015   22:29:51   (   0.01,-134.87) (   0.10,-134.44)   48.87                80
 03/26/2015   10:32:51   (  -0.00,-134.78) (   0.09,-135.17)   44.52                80
 03/27/2015   10:11:25   (  -0.01,-134.74) (  -0.89,-130.63)  467.26                80