Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 7 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/28/2016   10:37:47   (  -0.22,-135.05) (   0.48,-138.25)  364.51                80
 07/29/2016   10:21:41   (  -0.22,-135.01) (  -0.51,-133.71)  148.28                80
 07/30/2016   22:40:57   (   0.24,-134.96) (  -0.64,-139.02)  461.62                80
 07/31/2016   22:24:52   (   0.23,-134.93) (   0.35,-134.48)   51.01                80
 08/03/2016   10:25:14   (  -0.25,-134.82) (  -0.18,-135.22)   45.03                80
 08/04/2016   10:09:08   (  -0.24,-134.78) (  -1.17,-130.68)  467.40                80
 08/05/2016   22:28:24   (   0.26,-134.72) (  -0.02,-135.98)  142.96                80
 08/06/2016   22:12:18   (   0.25,-134.68) (   0.97,-131.44)  369.29                80
 08/08/2016   10:31:25   (  -0.27,-134.61) (   0.19,-136.71)  239.68                80
 08/09/2016   10:15:20   (  -0.26,-134.56) (  -0.80,-132.17)  272.16                80