Simultaneous Nadir Overpasses (SNOs) near equator between AQUA and NPP
TLE Epoch: 2013 4 20.  Predictions up to the next  14.0 days:

Date(AQUA)     Time(AQUA)   AQUA Lat/Lon   Date(NPP)     Time(NPP)    NPP Lat/Lon    Distance (km)   Time Diff(sec)
 04/22/2013   01:00:45   (   9.22,-172.50) 04/22/2013   00:50:45    (   9.31,-173.16)   72.65            600
 04/22/2013   01:48:07   (  -1.97,  -3.29) 04/22/2013   01:39:18    (  -1.80,  -4.13)   95.54            529
 04/24/2013   17:16:02   (   4.90, -55.69) 04/24/2013   17:06:24    (   4.74, -56.35)   75.66            578
 04/27/2013   09:32:02   (   3.22,  60.55) 04/27/2013   09:22:52    (   3.04,  59.80)   86.22            550
 04/30/2013   00:59:45   (  -6.04,   8.22) 04/30/2013   00:49:48    (  -5.90,   7.63)   66.89            597
 04/30/2013   01:48:00   (   1.45, 176.82) 04/30/2013   01:39:19    (   1.30, 175.96)   97.02            521
 05/02/2013   17:15:42   (  -4.31, 124.48) 05/02/2013   17:06:14    (  -4.15, 123.79)   77.91            568