Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 1 19.  Predictions up to the next  30.0 days:

Date(AQUA)     Time(AQUA)   AQUA Lat/Lon   Date(NPP)     Time(NPP)    NPP Lat/Lon    Distance (km)   Time Diff(sec)
 01/21/2013   15:11:08   (  18.82, 158.88) 01/21/2013   15:10:04    (  19.29, 156.36)  270.46             64
 01/29/2013   15:59:26   (  22.62, 147.44) 01/29/2013   15:59:58    (  23.28, 144.60)  300.68             32
 02/06/2013   15:10:17   (  21.52, 159.56) 02/06/2013   15:09:58    (  22.06, 156.88)  282.41             19
 02/14/2013   15:59:28   (  22.58, 147.45) 02/14/2013   16:00:52    (  23.26, 144.38)  323.04             84