Simultaneous Nadir Overpasses (SNOs) near US between NOAA-19 and NPP
TLE Epoch: 2013 3 10.  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)
 03/19/2013   07:06:26   (  49.91, -71.84) 03/19/2013   07:06:28    (  50.56, -75.00)  235.89              2
 03/19/2013   08:49:01   (  48.18, -98.12) 03/19/2013   08:48:30    (  48.72,-101.19)  233.90             31
 03/19/2013   10:31:40   (  46.23,-124.46) 03/19/2013   10:30:34    (  46.75,-127.38)  231.58             66
 03/19/2013   18:38:39   (  49.96, -86.23) 03/19/2013   18:34:52    (  49.64, -88.19)  145.26            227
 03/19/2013   20:20:44   (  49.98,-111.76) 03/19/2013   20:16:22    (  49.64,-113.57)  135.20            262
 03/20/2013   07:03:33   (  22.18, -78.13) 03/20/2013   06:55:31    (  22.45, -79.35)  129.05            482
 03/20/2013   08:46:13   (  20.13,-104.17) 03/20/2013   08:37:36    (  20.40,-105.24)  115.48            517