Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP over region 
TLE Epoch: 2013 1 16.  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)
 01/16/2013   15:08:54   (  11.39, 158.37) 01/16/2013   15:05:41    (  11.84, 156.22)  239.10            193
 01/28/2013   03:43:02   (  10.10, 146.50) 01/28/2013   03:46:37    (   9.20, 142.74)  424.09            215
 01/28/2013   14:40:15   (  11.42, 165.59) 01/28/2013   14:40:15    (  12.07, 162.63)  330.35              0
 01/28/2013   16:19:39   (  20.76, 142.32) 01/28/2013   16:19:06    (  21.34, 139.47)  303.00             33
 01/29/2013   03:35:43   (  22.68, 146.20) 01/29/2013   03:32:06    (  25.11, 143.68)  372.43            217
 02/09/2013   15:50:19   (  22.61, 150.04) 02/09/2013   15:53:16    (  23.45, 146.32)  392.58            177
 02/10/2013   03:06:54   (  22.68, 153.46) 02/10/2013   03:06:01    (  22.12, 150.76)  283.76             53