Simultaneous Nadir Overpasses (SNOs) near US between AQUA and NPP
TLE Epoch: 2013 3 20.  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)
 03/21/2013   06:32:08   (  41.89, -66.65) 03/21/2013   06:30:50    (  42.24, -68.82)  182.99             78
 03/21/2013   08:08:46   (  49.93, -88.38) 03/21/2013   08:09:58    (  50.43, -90.92)  189.27             72
 03/21/2013   09:47:39   (  49.93,-113.10) 03/21/2013   09:51:26    (  50.55,-116.24)  233.64            227
 03/23/2013   19:06:57   (  49.98, -92.63) 03/23/2013   19:00:18    (  49.64, -94.54)  142.50            399
 03/23/2013   20:45:50   (  49.97,-117.35) 03/23/2013   20:41:46    (  49.53,-119.87)  187.82            244
 03/29/2013   07:19:21   (  49.88, -76.02) 03/29/2013   07:19:23    (  50.35, -78.29)  169.67              2
 03/29/2013   08:58:14   (  49.89,-100.74) 03/29/2013   09:00:51    (  50.46,-103.61)  214.16            157