Simultaneous Nadir Overpasses (SNOs) near US between AQUA and NPP
TLE Epoch: 2012 4 8.  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   (  49.91, -76.06) 04/11/2012   07:19:25    (  50.34, -78.30)  166.67              2
 04/11/2012   08:58:16   (  49.92,-100.78) 04/11/2012   09:00:52    (  50.51,-103.60)  211.15            156
 04/13/2012   18:17:33   (  49.94, -80.29) 04/13/2012   18:09:40    (  49.65, -81.80)  113.42            473
 04/13/2012   19:56:27   (  50.00,-105.03) 04/13/2012   19:51:10    (  49.65,-107.18)  158.58            317
 04/13/2012   21:31:30   (  36.28,-124.99) 04/13/2012   21:28:41    (  35.81,-127.54)  234.94            169