Simultaneous Nadir Overpasses (SNOs) near US between NOAA-19 and NPP
TLE Epoch: 2013 2 18.  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)
 02/22/2013   08:14:50   (  49.92, -89.08) 02/22/2013   08:15:45    (  50.56, -92.37)  244.72             55
 02/22/2013   09:56:55   (  49.91,-114.60) 02/22/2013   09:57:15    (  50.56,-117.75)  234.95             20
 02/22/2013   18:05:03   (  49.98, -77.97) 02/22/2013   18:02:38    (  49.57, -80.15)  163.06            145
 02/22/2013   19:47:08   (  49.99,-103.49) 02/22/2013   19:44:09    (  49.63,-105.55)  152.96            179
 02/22/2013   21:26:13   (  39.64,-124.98) 02/22/2013   21:22:40    (  39.28,-127.00)  177.57            213
 02/23/2013   08:11:05   (  25.21, -94.59) 02/23/2013   08:03:56    (  25.49, -95.95)  139.91            429
 02/23/2013   09:53:45   (  23.16,-120.64) 02/23/2013   09:46:01    (  23.44,-121.85)  127.09            464