Simultaneous Nadir Overpasses (SNOs) between METOP-B and NPP
TLE Epoch: 2017 7 1.  Predictions up to the next  14.0 days:

     Date     Time(METOP-B) METOP-B Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/15/2017   22:00:27   (  73.39,-156.85) 07/15/2017   21:59:19  (  73.41,-159.40)   81.01                68