Simultaneous Nadir Overpasses (SNOs) near US between NOAA-19 and NPP
TLE Epoch: 2014 6 27.  Predictions up to the next  10.0 days:

Date(NOAA-19)     Time(NOAA-19)   NOAA-19 Lat/Lon   Date(NPP)     Time(NPP)    NPP Lat/Lon    Distance (km)   Time Diff(sec)
 06/29/2014   19:33:22   (  49.96, -96.07) 06/29/2014   19:27:02    (  49.44, -99.21)  233.00            380
 06/29/2014   21:15:26   (  49.99,-121.59) 06/29/2014   21:08:32    (  49.44,-124.58)  223.17            414