Simultaneous Nadir Overpasses (SNOs) near US between NOAA-19 and NPP
TLE Epoch: 2013 4 22.  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)
 04/25/2013   18:43:03   (  50.00, -87.14) 04/25/2013   18:41:40    (  49.54, -89.78)  196.71             83
 04/25/2013   20:25:07   (  49.96,-112.64) 04/25/2013   20:23:10    (  49.54,-115.16)  186.87            117
 04/26/2013   07:05:29   (  30.63, -76.75) 04/26/2013   06:59:54    (  31.01, -78.72)  192.50            335
 04/26/2013   08:48:08   (  28.63,-102.83) 04/26/2013   08:41:58    (  29.02,-104.64)  182.04            370