Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP over region 
TLE Epoch: 2012 12 22.  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)
 12/22/2012   03:37:42   (  11.54, 147.44) 12/22/2012   03:40:53    (  10.75, 143.89)  396.62            191
 12/22/2012   16:14:38   (  18.77, 143.06) 12/22/2012   16:13:31    (  19.33, 140.47)  278.58             67
 12/23/2012   03:30:02   (  22.70, 147.45) 12/23/2012   03:26:24    (  26.75, 144.76)  525.55            218
 01/03/2013   15:45:08   (  22.59, 151.16) 01/03/2013   15:46:54    (  23.37, 147.85)  349.91            106
 01/04/2013   03:01:39   (  22.69, 154.59) 01/04/2013   02:59:37    (  22.19, 152.31)  241.55            122
 01/15/2013   15:16:41   (  22.59, 158.32) 01/15/2013   15:20:16    (  27.15, 155.22)  595.95            215
 01/16/2013   02:32:29   (  19.99, 162.42) 01/16/2013   02:33:15    (  19.29, 159.41)  324.18             46
 01/16/2013   15:09:12   (  10.65, 158.16) 01/16/2013   15:05:46    (  11.11, 156.07)  233.82            206