Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 4 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/06/2013   10:07:42   (   0.04,-134.86) (  -0.90,-130.79)  463.68                80
 04/07/2013   22:29:38   (  -0.04,-134.78) (  -0.35,-136.08)  149.34                80
 04/08/2013   22:08:15   (  -0.04,-134.74) (   0.69,-131.56)  362.57                80
 04/10/2013   10:30:04   (   0.04,-134.70) (   0.48,-136.83)  242.89                80
 04/11/2013   10:13:59   (   0.03,-134.65) (  -0.49,-132.30)  268.76                80
 04/12/2013   22:35:57   (  -0.04,-134.57) (  -0.69,-137.60)  345.10                80
 04/13/2013   22:14:32   (  -0.04,-134.52) (   0.29,-133.06)  166.16                80
 04/15/2013   10:36:21   (   0.04,-134.47) (   0.88,-138.34)  440.38                80
 04/16/2013   10:20:17   (   0.04,-134.42) (  -0.10,-133.80)   70.63                80
 04/18/2013   22:20:50   (  -0.05,-134.27) (  -0.10,-134.57)   33.50                80