Simultaneous Nadir Overpasses (SNOs) near US between NOAA-19 and NPP
TLE Epoch: 2013 4 8.  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)
 04/13/2013   07:41:05   (  45.63, -81.86) 04/13/2013   07:39:49    (  46.17, -84.83)  237.65             76
 04/13/2013   09:23:45   (  43.60,-108.16) 04/13/2013   09:21:54    (  44.14,-110.98)  234.42            111
 04/13/2013   19:12:02   (  49.99, -94.45) 04/13/2013   19:06:57    (  49.66, -96.17)  128.98            305
 04/13/2013   20:54:06   (  49.95,-119.95) 04/13/2013   20:48:27    (  49.66,-121.55)  119.09            339