Simultaneous Nadir Overpasses (SNOs) near US between AQUA and NPP
TLE Epoch: 2012 4 7.  Predictions up to the next  10.0 days:

Date(AQUA)     Time(AQUA)   AQUA Lat/Lon   Date(NPP)     Time(NPP)    NPP Lat/Lon    Distance (km)   Time Diff(sec)
 04/11/2012   07:19:23   (  49.93, -76.06) 04/11/2012   07:19:25    (  50.36, -78.30)  166.61              2
 04/11/2012   08:58:16   (  49.94,-100.77) 04/11/2012   09:00:52    (  50.53,-103.59)  211.06            156
 04/13/2012   18:17:34   (  49.99, -80.31) 04/13/2012   18:09:41    (  49.69, -81.82)  113.36            473
 04/13/2012   19:56:27   (  49.98,-105.03) 04/13/2012   19:51:09    (  49.58,-107.15)  158.59            318
 04/13/2012   21:31:30   (  36.27,-124.98) 04/13/2012   21:28:41    (  35.80,-127.53)  234.97            169