Simultaneous Nadir Overpasses (SNOs) near US between AQUA and NPP
TLE Epoch: 2012 5 21.  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)
 05/23/2012   19:06:39   (  49.98, -92.55) 05/23/2012   18:59:56    (  49.63, -94.42)  140.41            403
 05/23/2012   20:45:32   (  49.99,-117.27) 05/23/2012   20:41:24    (  49.53,-119.75)  185.71            248
 05/29/2012   07:18:54   (  49.84, -76.03) 05/29/2012   07:18:52    (  50.21, -78.28)  166.62              2
 05/29/2012   08:57:46   (  49.89,-100.72) 05/29/2012   09:00:18    (  50.43,-103.56)  210.70            152