Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2012 7 12.  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)
 07/13/2012   15:11:01   (  19.34, 159.00) 07/13/2012   15:10:06    (  19.87, 156.47)  271.92             55
 07/21/2012   15:59:29   (  22.60, 147.40) 07/21/2012   15:59:55    (  23.24, 144.59)  296.65             26
 07/29/2012   15:10:30   (  20.36, 159.26) 07/29/2012   15:09:52    (  20.88, 156.67)  275.86             38
 08/06/2012   15:59:04   (  22.64, 147.48) 08/06/2012   15:59:58    (  23.27, 144.56)  307.71             54