Simultaneous Nadir Overpasses (SNOs) between METOP-B and NPP
TLE Epoch: 2017 12 2.  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)
 12/16/2017   22:13:49   (  73.39,-160.21) 12/16/2017   22:12:41  (  73.42,-162.74)   80.29                68