Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP over region 
TLE Epoch: 2013 1 25.  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)
 01/28/2013   03:43:06   (  10.11, 146.48) 01/28/2013   03:46:41    (   8.41, 142.85)  441.31            215
 01/28/2013   14:40:18   (  11.48, 165.59) 01/28/2013   14:40:31    (  12.18, 162.58)  336.33             13
 01/28/2013   16:19:30   (  21.58, 142.50) 01/28/2013   16:19:11    (  22.16, 139.59)  307.28             19
 01/29/2013   03:35:48   (  22.66, 146.18) 01/29/2013   03:32:12    (  24.32, 143.81)  304.92            216
 02/09/2013   15:50:31   (  22.63, 149.99) 02/09/2013   15:53:42    (  23.49, 146.21)  398.24            191
 02/10/2013   03:07:07   (  22.69, 153.40) 02/10/2013   03:06:28    (  22.12, 150.65)  289.50             39
 02/10/2013   15:43:13   (  10.05, 149.68) 02/10/2013   15:39:37    (   6.17, 146.87)  531.31            216
 02/22/2013   02:35:17   (  12.11, 163.22) 02/22/2013   02:38:17    (  11.28, 159.52)  413.62            180
 02/22/2013   15:11:59   (  18.61, 158.96) 02/22/2013   15:10:49    (  19.21, 156.19)  299.54             70