Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 4 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/04/2016   22:34:50   (  -0.05,-135.25) (  -0.51,-137.40)  245.14                80
 04/05/2016   22:18:46   (  -0.05,-135.27) (   0.50,-132.87)  273.23                80
 04/07/2016   10:40:34   (   0.05,-135.29) (   0.69,-138.14)  324.94                80
 04/08/2016   10:19:09   (   0.04,-135.31) (  -0.31,-133.61)  192.73                80
 04/09/2016   22:41:07   (  -0.05,-135.33) (  -0.84,-138.93)  409.82                80
 04/10/2016   22:25:02   (  -0.05,-135.34) (   0.16,-134.40)  107.74                80
 04/12/2016   10:46:51   (   0.05,-135.36) (   1.02,-139.67)  491.15                80
 04/13/2016   10:25:26   (   0.05,-135.37) (   0.02,-135.14)   25.97                80
 04/15/2016   22:28:39   (  -0.06,-135.39) (  -0.15,-135.93)   60.69                80
 04/16/2016   22:12:34   (  -0.06,-135.40) (   0.85,-131.40)  456.46                80