Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 6 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/09/2019   10:24:43   (   0.01,-137.21) (  -0.44,-135.34)  214.34                80
 06/10/2019   22:46:39   (  -0.01,-137.19) (  -0.77,-140.63)  392.80                80
 06/11/2019   22:30:34   (  -0.01,-137.19) (   0.23,-136.10)  123.58                80
 06/13/2019   10:52:23   (   0.01,-137.21) (   0.96,-141.37)  474.72                80
 06/14/2019   10:30:59   (   0.00,-137.21) (  -0.10,-136.85)   41.06                80
 06/16/2019   22:34:11   (   0.01,-137.16) (  -0.12,-137.62)   52.16                80
 06/17/2019   22:18:07   (   0.00,-137.15) (   0.89,-133.08)  463.43                80
 06/19/2019   10:39:56   (  -0.00,-137.17) (   0.24,-138.36)  135.92                80
 06/20/2019   10:18:31   (   0.00,-137.16) (  -0.76,-133.83)  379.27                80
 06/21/2019   22:40:28   (  -0.00,-137.11) (  -0.45,-139.13)  230.46                80