Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2014 5 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/18/2014   22:23:51   (  -0.02,-134.77) (   0.34,-133.06)  194.18                80
 05/20/2014   10:43:01   (   0.02,-134.72) (   0.80,-138.34)  411.67                80
 05/21/2014   10:26:58   (   0.02,-134.67) (  -0.20,-133.80)   99.83                80
 05/23/2014   22:30:13   (  -0.02,-134.53) (  -0.00,-134.57)    4.25                80
 05/26/2014   10:30:38   (   0.01,-134.43) (   0.19,-135.30)   98.81                80
 05/27/2014   10:14:35   (   0.01,-134.37) (  -0.82,-130.76)  411.96                80
 05/28/2014   22:33:53   (  -0.00,-134.27) (  -0.38,-136.06)  203.71                80
 05/29/2014   22:17:50   (  -0.01,-134.22) (   0.63,-131.53)  306.93                80
 05/31/2014   10:36:58   (  -0.00,-134.15) (   0.62,-136.78)  300.44                80