Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 4 2.  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)
 04/03/2013   16:00:14   (  22.60, 147.37) 04/03/2013   16:01:03    (  23.25, 144.44)  309.38             49
 04/11/2013   15:11:23   (  20.97, 159.33) 04/11/2013   15:10:55    (  21.49, 156.67)  282.00             28
 04/19/2013   16:00:24   (  22.61, 147.37) 04/19/2013   16:01:15    (  23.25, 144.42)  310.71             51
 04/27/2013   15:11:09   (  21.67, 159.54) 04/27/2013   15:10:52    (  22.20, 156.84)  285.11             17