Simultaneous Nadir Overpasses (SNOs) near US between AQUA and NPP
TLE Epoch: 2012 5 18.  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)
 05/21/2012   06:31:58   (  41.70, -66.72) 05/21/2012   06:30:36    (  42.06, -68.85)  180.65             82
 05/21/2012   08:08:33   (  49.90, -88.40) 05/21/2012   08:09:42    (  50.37, -90.92)  186.75             69
 05/21/2012   09:47:26   (  49.90,-113.12) 05/21/2012   09:51:09    (  50.53,-116.22)  231.17            223
 05/23/2012   19:06:39   (  49.97, -92.54) 05/23/2012   18:59:56    (  49.64, -94.43)  140.24            403
 05/23/2012   20:45:31   (  49.98,-117.26) 05/23/2012   20:41:23    (  49.53,-119.75)  185.55            248