Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2014 7 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)
 07/19/2014   10:22:08   (  -0.16,-135.24) (  -0.86,-132.30)  336.53                80
 07/20/2014   22:41:28   (   0.18,-135.29) (  -0.31,-137.60)  263.12                80
 07/21/2014   22:25:24   (   0.18,-135.31) (   0.67,-133.07)  255.95                80
 07/23/2014   10:44:35   (  -0.20,-135.34) (   0.46,-138.35)  341.92                80
 07/24/2014   10:28:32   (  -0.19,-135.36) (  -0.52,-133.81)  176.84                80
 07/25/2014   22:47:51   (   0.21,-135.40) (  -0.64,-139.12)  423.66                80
 07/26/2014   22:31:49   (   0.20,-135.42) (   0.40,-134.59)   94.89                80
 07/29/2014   10:34:57   (  -0.21,-135.46) (  -0.25,-135.34)   14.66                80
 07/31/2014   22:35:32   (   0.22,-135.51) (   0.07,-136.11)   68.62                80