Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 6 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/05/2019   09:59:09   (  -0.00,-128.41) (   0.09,-128.87)   51.91                80
 06/06/2019   09:43:05   (   0.01,-128.40) (  -0.90,-124.34)  463.28                80
 06/07/2019   22:02:22   (   0.01,-128.39) (  -0.26,-129.65)  143.20                80
 06/08/2019   21:46:18   (  -0.00,-128.37) (   0.74,-125.11)  372.05                80
 06/10/2019   10:05:26   (  -0.02,-128.35) (   0.45,-130.38)  231.77                80
 06/11/2019   09:49:21   (  -0.01,-128.34) (  -0.55,-125.85)  283.10                80
 06/12/2019   22:08:39   (   0.03,-128.31) (  -0.61,-131.16)  324.45                80
 06/13/2019   21:52:34   (   0.02,-128.30) (   0.39,-126.63)  190.40                80
 06/15/2019   10:11:44   (  -0.05,-128.27) (   0.75,-131.91)  413.69                80
 06/16/2019   09:55:39   (  -0.04,-128.25) (  -0.25,-127.37)  100.63                80