Simultaneous Nadir Overpasses (SNOs) near US between NOAA-19 and NPP
TLE Epoch: 2012 9 18.  Predictions up to the next  10.0 days:

Date(NOAA-19)     Time(NOAA-19)   NOAA-19 Lat/Lon   Date(NPP)     Time(NPP)    NPP Lat/Lon    Distance (km)   Time Diff(sec)
 09/27/2012   07:49:37   (  49.91, -83.41) 09/27/2012   07:49:42    (  50.43, -86.03)  195.32              5
 09/27/2012   09:32:10   (  48.31,-109.64) 09/27/2012   09:31:41    (  48.76,-112.14)  191.11             29
 09/27/2012   17:39:53   (  49.99, -72.26) 09/27/2012   17:36:35    (  49.74, -73.77)  111.81            198
 09/27/2012   19:21:58   (  49.99, -97.78) 09/27/2012   19:18:05    (  49.74, -99.15)  101.69            233
 09/27/2012   21:04:03   (  49.98,-123.30) 09/27/2012   20:59:35    (  49.75,-124.52)   91.59            268
 09/28/2012   07:46:50   (  21.99, -89.74) 09/28/2012   07:38:47    (  22.11, -90.39)   67.49            483
 09/28/2012   09:29:29   (  20.01,-115.76) 09/28/2012   09:20:52    (  20.05,-116.27)   53.38            517