Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2015 4 10.  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)
 04/12/2015   02:41:29   (  15.89, 161.41) 04/12/2015   02:39:52    (  15.65, 160.22)  130.52             97
 04/20/2015   03:30:03   (  12.39, 149.80) 04/20/2015   03:29:24    (  12.12, 148.37)  158.20             39
 04/28/2015   02:42:04   (  17.79, 160.96) 04/28/2015   02:39:56    (  17.52, 159.83)  123.99            128
 05/03/2015   15:10:56   (  22.63, 159.81) 05/03/2015   15:14:25    (  27.73, 158.52)  581.08            209
 05/06/2015   03:30:14   (  13.64, 149.56) 05/06/2015   03:29:14    (  13.37, 148.15)  155.59             60