Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 3 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/17/2016   10:34:18   (   0.01,-134.65) (   0.46,-136.58)  220.50                80
 03/18/2016   10:12:53   (   0.01,-134.69) (  -0.55,-132.05)  300.75                80
 03/19/2016   22:37:28   (  -0.02,-134.74) (  -0.62,-137.35)  297.64                80
 03/20/2016   22:16:03   (  -0.01,-134.79) (   0.40,-132.82)  223.73                80
 03/22/2016   10:40:30   (   0.02,-134.87) (   0.71,-138.10)  367.72                80
 03/23/2016   10:19:05   (   0.01,-134.91) (  -0.31,-133.57)  153.15                80
 03/24/2016   22:43:39   (  -0.02,-134.95) (  -0.91,-138.86)  446.25                80
 03/25/2016   22:24:53   (  -0.01,-134.99) (   0.11,-134.33)   74.54                80
 03/28/2016   10:25:15   (   0.01,-135.09) (  -0.02,-135.08)    3.95                80
 03/30/2016   22:28:24   (  -0.01,-135.15) (  -0.16,-135.84)   78.69                80