Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 7 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)
 07/02/2018   10:36:51   (  -0.12,-135.22) (   0.53,-138.17)  336.63                80
 07/03/2018   10:20:46   (  -0.11,-135.24) (  -0.44,-133.63)  183.06                80
 07/04/2018   22:40:03   (   0.13,-135.30) (  -0.68,-138.95)  415.66                80
 07/05/2018   22:23:58   (   0.12,-135.32) (   0.35,-134.42)  103.80                80
 07/07/2018   10:43:06   (  -0.15,-135.33) (   0.82,-139.68)  495.71                80
 07/08/2018   10:27:00   (  -0.14,-135.35) (  -0.16,-135.14)   23.24                80
 07/10/2018   22:27:32   (   0.15,-135.41) (   0.01,-135.92)   59.11                80
 07/11/2018   22:11:28   (   0.14,-135.42) (   1.05,-131.39)  459.01                80
 07/13/2018   10:30:35   (  -0.17,-135.41) (   0.12,-136.66)  142.36                80
 07/14/2018   10:14:30   (  -0.16,-135.42) (  -0.92,-132.13)  375.29                80