Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 6 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/01/2016   10:09:25   (   0.02,-134.95) (  -0.93,-130.66)  488.44                80
 06/02/2016   22:28:42   (  -0.01,-134.99) (  -0.20,-135.98)  112.46                80
 06/03/2016   22:12:36   (  -0.01,-135.02) (   0.77,-131.44)  408.10                80
 06/05/2016   10:31:45   (  -0.01,-135.10) (   0.36,-136.72)  184.76                80
 06/06/2016   10:15:40   (   0.00,-135.13) (  -0.67,-132.19)  335.43                80
 06/07/2016   22:34:56   (   0.01,-135.16) (  -0.51,-137.50)  266.49                80
 06/08/2016   22:18:52   (   0.00,-135.19) (   0.52,-132.97)  253.60                80
 06/10/2016   10:37:59   (  -0.02,-135.26) (   0.67,-138.24)  339.78                80
 06/11/2016   10:21:55   (  -0.01,-135.29) (  -0.36,-133.71)  180.15                80
 06/12/2016   22:41:11   (   0.03,-135.32) (  -0.82,-139.02)  422.36                80
 06/13/2016   22:25:07   (   0.02,-135.34) (   0.21,-134.49)   97.31                80