Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 3 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)
 03/19/2016   22:34:49   (  -0.02,-134.74) (  -0.58,-137.36)  297.54                80
 03/20/2016   22:18:43   (  -0.02,-134.79) (   0.44,-132.83)  223.74                80
 03/22/2016   10:40:30   (   0.02,-134.86) (   0.73,-138.10)  368.17                80
 03/23/2016   10:19:04   (   0.02,-134.90) (  -0.29,-133.56)  152.56                80
 03/24/2016   22:41:00   (  -0.02,-134.94) (  -0.88,-138.87)  446.68                80
 03/25/2016   22:24:54   (  -0.02,-134.98) (   0.15,-134.34)   74.01                80
 03/28/2016   10:25:15   (   0.01,-135.08) (   0.01,-135.07)    1.42                80
 03/30/2016   22:28:24   (  -0.02,-135.14) (  -0.20,-135.83)   79.80                80
 03/31/2016   22:12:18   (  -0.01,-135.17) (   0.83,-131.30)  439.87                80