Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 8 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)
 08/06/2015   10:34:47   (  -0.25,-135.00) (   0.14,-136.78)  203.12                80
 08/07/2015   10:18:41   (  -0.25,-134.98) (  -0.88,-132.25)  311.54                80
 08/08/2015   22:37:56   (   0.26,-134.97) (  -0.33,-137.55)  293.88                80
 08/09/2015   22:21:50   (   0.26,-134.95) (   0.70,-133.02)  220.33                80
 08/11/2015   10:40:57   (  -0.28,-134.89) (   0.49,-138.28)  387.36                80
 08/12/2015   10:24:51   (  -0.27,-134.86) (  -0.53,-133.75)  126.75                80
 08/13/2015   22:44:05   (   0.29,-134.85) (  -0.67,-139.05)  478.98                80
 08/14/2015   22:28:00   (   0.28,-134.83) (   0.36,-134.52)   34.90                80
 08/17/2015   10:28:21   (  -0.29,-134.73) (  -0.19,-135.26)   59.74                80
 08/18/2015   10:12:14   (  -0.28,-134.70) (  -1.16,-130.72)  453.90                80