Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 5 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/31/2019   22:34:05   (   0.01,-137.15) (  -0.12,-137.60)   51.71                80
 06/01/2019   22:18:01   (   0.01,-137.14) (   0.94,-133.08)  463.43                80
 06/03/2019   10:39:49   (  -0.01,-137.14) (   0.26,-138.35)  137.82                80
 06/04/2019   10:18:25   (  -0.01,-137.12) (  -0.74,-133.81)  376.56                80
 06/05/2019   22:40:21   (   0.01,-137.07) (  -0.48,-139.11)  233.39                80
 06/06/2019   22:24:18   (   0.00,-137.05) (   0.58,-134.59)  280.84                80
 06/08/2019   10:46:06   (  -0.00,-137.04) (   0.62,-139.86)  321.39                80
 06/09/2019   10:24:42   (   0.01,-137.01) (  -0.38,-135.33)  192.28                80
 06/10/2019   22:46:38   (  -0.00,-136.95) (  -0.83,-140.62)  419.14                80
 06/11/2019   22:30:33   (  -0.01,-136.92) (   0.16,-136.09)   94.52                80