Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 12 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/06/2019   10:52:11   (   0.00,-137.20) (   0.95,-141.34)  472.06                80
 12/07/2019   10:30:47   (   0.00,-137.20) (  -0.11,-136.82)   44.20                80
 12/09/2019   22:36:36   (  -0.01,-137.18) (  -0.10,-137.58)   45.77                80
 12/10/2019   22:15:11   (  -0.01,-137.17) (   0.90,-133.05)  469.79                80
 12/12/2019   10:39:37   (   0.02,-137.16) (   0.29,-138.31)  131.57                80
 12/13/2019   10:18:13   (   0.01,-137.14) (  -0.76,-133.79)  383.31                80
 12/14/2019   22:42:48   (  -0.02,-137.11) (  -0.43,-139.09)  224.55                80
 12/15/2019   22:21:23   (  -0.01,-137.09) (   0.57,-134.55)  289.84                80
 12/17/2019   10:45:49   (   0.01,-137.07) (   0.63,-139.81)  312.93                80
 12/18/2019   10:24:24   (   0.01,-137.05) (  -0.37,-135.28)  201.13                80