Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2015 4 21.  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)
 04/28/2015   02:42:04   (  17.79, 160.95) 04/28/2015   02:39:56    (  17.55, 159.82)  122.53            128
 05/03/2015   15:10:52   (  22.63, 159.81) 05/03/2015   15:14:21    (  27.89, 158.57)  598.49            209
 05/06/2015   03:30:03   (  13.37, 149.63) 05/06/2015   03:29:08    (  13.09, 148.22)  155.56             55
 05/14/2015   02:41:20   (  17.53, 161.16) 05/14/2015   02:39:16    (  17.27, 159.97)  128.86            124