Simultaneous Nadir Overpasses (SNOs) near US between NOAA-19 and NPP
TLE Epoch: 2013 3 30.  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)
 03/31/2013   18:09:48   (  49.99, -78.96) 03/31/2013   18:09:39    (  49.51, -81.82)  211.89              9
 03/31/2013   19:51:52   (  49.95,-104.46) 03/31/2013   19:51:08    (  49.46,-107.17)  202.06             44
 03/31/2013   21:30:05   (  36.64,-124.99) 03/31/2013   21:28:48    (  36.14,-127.69)  248.25             77
 04/01/2013   06:33:24   (  26.67, -69.68) 04/01/2013   06:28:59    (  27.14, -71.82)  218.65            265
 04/01/2013   08:13:42   (  32.85, -93.47) 04/01/2013   08:08:44    (  33.27, -95.50)  194.39            298
 04/01/2013   09:56:21   (  30.87,-119.57) 04/01/2013   09:50:49    (  31.23,-121.46)  184.69            332
 04/01/2013   17:58:52   (  49.95, -76.21) 04/01/2013   17:50:42    (  49.77, -77.18)   72.02            490
 04/01/2013   19:40:57   (  49.97,-101.74) 04/01/2013   19:32:19    (  50.18,-102.73)   74.50            518