Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 7 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/09/2016   22:34:51   (   0.14,-135.48) (  -0.34,-137.52)  233.47                80
 07/10/2016   22:18:47   (   0.13,-135.47) (   0.71,-133.00)  282.17                80
 07/12/2016   10:37:54   (  -0.15,-135.46) (   0.45,-138.27)  319.95                80
 07/13/2016   10:21:48   (  -0.14,-135.45) (  -0.53,-133.73)  195.31                80
 07/14/2016   22:41:05   (   0.17,-135.42) (  -0.64,-139.04)  412.98                80
 07/15/2016   22:24:59   (   0.16,-135.40) (   0.35,-134.50)  101.82                80
 07/18/2016   10:28:02   (  -0.18,-135.35) (  -0.23,-135.25)   13.05                80
 07/20/2016   22:28:33   (   0.19,-135.29) (   0.05,-136.02)   82.93                80
 07/21/2016   22:12:27   (   0.18,-135.26) (   1.04,-131.48)  430.97                80