Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP over region 
TLE Epoch: 2012 6 30.  Predictions up to the next  30.0 days:

Date(NOAA-19)     Time(NOAA-19)   NOAA-19 Lat/Lon   Date(NPP)     Time(NPP)    NPP Lat/Lon    Distance (km)   Time Diff(sec)
 07/03/2012   14:56:40   (  22.32, 162.66) 07/03/2012   14:56:34    (  22.82, 160.38)  240.73              6
 07/04/2012   03:55:12   (  22.67, 140.66) 07/04/2012   03:51:36    (  25.52, 138.76)  370.52            216
 07/15/2012   16:11:16   (  22.60, 144.07) 07/15/2012   16:12:55    (  23.22, 141.34)  288.79             99
 07/16/2012   03:27:45   (  22.66, 147.54) 07/16/2012   03:25:39    (  22.28, 145.82)  181.61            126
 07/27/2012   15:43:49   (  22.59, 150.95) 07/27/2012   15:47:24    (  26.09, 148.23)  477.47            215
 07/28/2012   02:59:39   (  20.46, 154.98) 07/28/2012   03:00:17    (  19.89, 152.56)  260.29             38
 07/28/2012   15:36:36   (  10.03, 150.63) 07/28/2012   15:32:59    (  10.06, 149.09)  168.20            217