Simultaneous Nadir Overpasses (SNOs) near US between NOAA-19 and NPP
TLE Epoch: 2012 12 20.  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)
 12/22/2012   07:35:16   (  49.91, -79.49) 12/22/2012   07:37:05    (  50.59, -82.78)  245.50            109
 12/22/2012   09:17:21   (  49.90,-105.02) 12/22/2012   09:18:36    (  50.52,-108.18)  235.66             75
 12/22/2012   17:25:25   (  49.95, -68.33) 12/22/2012   17:23:58    (  49.58, -70.55)  164.77             87
 12/22/2012   19:07:30   (  49.96, -93.85) 12/22/2012   19:05:28    (  49.59, -95.93)  154.64            122
 12/22/2012   20:49:35   (  49.96,-119.38) 12/22/2012   20:46:58    (  49.60,-121.31)  144.56            157
 12/23/2012   07:30:38   (  28.30, -84.17) 12/23/2012   07:24:23    (  28.55, -85.55)  137.64            375
 12/23/2012   09:13:18   (  26.25,-110.24) 12/23/2012   09:06:28    (  26.49,-111.47)  125.40            410