Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 6 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/06/2016   10:15:40   (   0.00,-135.13) (  -0.64,-132.18)  335.38                80
 06/07/2016   22:34:57   (   0.02,-135.16) (  -0.49,-137.50)  266.71                80
 06/08/2016   22:18:51   (   0.01,-135.19) (   0.49,-132.96)  253.31                80
 06/10/2016   10:38:00   (  -0.02,-135.26) (   0.64,-138.24)  340.15                80
 06/11/2016   10:21:54   (  -0.01,-135.29) (  -0.34,-133.70)  179.75                80
 06/12/2016   22:41:12   (   0.03,-135.31) (  -0.79,-139.02)  422.90                80
 06/13/2016   22:25:07   (   0.02,-135.34) (   0.24,-134.50)   96.73                80
 06/15/2016   10:44:14   (  -0.04,-135.40) (   0.94,-139.76)  497.63                80
 06/16/2016   10:28:10   (  -0.03,-135.42) (  -0.09,-135.24)   21.64                80
 06/18/2016   22:28:42   (   0.04,-135.46) (  -0.06,-136.02)   63.48                80