Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 8 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/26/2019   22:02:34   (  -0.38,-128.40) (  -0.63,-129.56)  131.75                80
 08/27/2019   21:46:30   (  -0.37,-128.40) (   0.39,-125.03)  383.80                80
 08/29/2019   10:08:17   (   0.38,-128.39) (   0.81,-130.29)  217.13                80
 08/30/2019   09:46:53   (   0.37,-128.38) (  -0.21,-125.76)  297.80                80
 08/31/2019   22:08:49   (  -0.37,-128.35) (  -0.99,-131.06)  309.61                80
 09/01/2019   21:52:44   (  -0.37,-128.34) (   0.03,-126.53)  205.75                80
 09/03/2019   10:14:32   (   0.37,-128.33) (   1.18,-131.79)  394.96                80
 09/04/2019   09:53:07   (   0.37,-128.32) (   0.16,-127.26)  119.70                80
 09/05/2019   22:15:04   (  -0.37,-128.27) (  -1.35,-132.56)  489.31                80
 09/06/2019   21:58:59   (  -0.37,-128.26) (  -0.32,-128.04)   25.44                80