Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 6 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/13/2019   10:52:24   (  -0.01,-137.22) (   0.91,-141.38)  474.46                80
 06/14/2019   10:30:59   (  -0.02,-137.22) (  -0.09,-136.85)   41.84                80
 06/16/2019   22:34:12   (   0.02,-137.19) (  -0.06,-137.63)   49.23                80
 06/17/2019   22:18:07   (   0.03,-137.19) (   0.94,-133.09)  466.85                80
 06/19/2019   10:39:56   (  -0.03,-137.21) (   0.25,-138.36)  131.99                80
 06/20/2019   10:18:32   (  -0.03,-137.20) (  -0.81,-133.84)  383.63                80
 06/21/2019   22:40:29   (   0.03,-137.17) (  -0.40,-139.14)  224.91                80
 06/22/2019   22:24:24   (   0.03,-137.16) (   0.60,-134.61)  290.75                80
 06/24/2019   10:46:12   (  -0.04,-137.17) (   0.58,-139.88)  308.37                80
 06/25/2019   10:24:48   (  -0.03,-137.16) (  -0.42,-135.34)  206.80                80