Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 8 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/10/2016   22:34:35   (   0.28,-134.45) (  -0.40,-137.47)  343.53                80
 08/11/2016   22:18:30   (   0.27,-134.40) (   0.60,-132.93)  167.39                80
 08/13/2016   10:37:37   (  -0.29,-134.31) (   0.56,-138.20)  443.47                80
 08/14/2016   10:21:32   (  -0.29,-134.25) (  -0.43,-133.67)   66.94                80
 08/16/2016   22:22:02   (   0.30,-134.11) (   0.24,-134.43)   36.66                80
 08/17/2016   22:05:56   (   0.29,-134.04) (   1.24,-129.89)  473.32                80
 08/19/2016   10:25:02   (  -0.31,-133.94) (  -0.02,-135.15)  138.81                80
 08/20/2016   10:08:57   (  -0.30,-133.87) (  -1.01,-130.62)  370.75                80
 08/21/2016   22:28:12   (   0.31,-133.77) (  -0.16,-135.92)  244.11                80
 08/22/2016   22:12:07   (   0.31,-133.71) (   0.84,-131.38)  265.11                80