Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 4 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/02/2013   22:20:40   (  -0.02,-134.96) (   0.08,-134.59)   42.55                80
 04/05/2013   10:23:45   (   0.03,-134.89) (   0.12,-135.32)   49.60                80
 04/06/2013   10:07:42   (   0.02,-134.85) (  -0.91,-130.80)  462.49                80
 04/07/2013   22:29:38   (  -0.03,-134.76) (  -0.33,-136.09)  151.14                80
 04/08/2013   22:08:15   (  -0.02,-134.72) (   0.70,-131.56)  360.65                80
 04/10/2013   10:30:03   (   0.02,-134.68) (   0.52,-136.82)  244.42                80
 04/11/2013   10:14:00   (   0.02,-134.64) (  -0.51,-132.30)  267.16                80
 04/12/2013   22:35:56   (  -0.02,-134.55) (  -0.72,-137.59)  347.22                80
 04/13/2013   22:14:32   (  -0.02,-134.50) (   0.32,-133.07)  163.91                80
 04/15/2013   10:36:21   (   0.02,-134.45) (   0.90,-138.33)  442.37                80