Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 6 4.  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) (   0.11,-128.86)   51.83                80
 06/06/2019   09:43:04   (   0.01,-128.40) (  -0.88,-124.33)  463.44                80
 06/07/2019   22:02:22   (   0.01,-128.39) (  -0.28,-129.64)  142.98                80
 06/08/2019   21:46:17   (  -0.00,-128.38) (   0.72,-125.11)  372.32                80
 06/10/2019   10:05:27   (  -0.02,-128.35) (   0.41,-130.39)  231.40                80
 06/11/2019   09:49:22   (  -0.01,-128.34) (  -0.59,-125.86)  283.54                80
 06/12/2019   22:08:38   (   0.03,-128.32) (  -0.63,-131.15)  323.96                80
 06/13/2019   21:52:34   (   0.02,-128.30) (   0.37,-126.62)  190.97                80
 06/15/2019   10:11:43   (  -0.05,-128.28) (   0.76,-131.90)  413.01                80
 06/16/2019   09:55:39   (  -0.04,-128.26) (  -0.24,-127.37)  101.33                80