Simultaneous Nadir Overpasses (SNOs) near US between NOAA-19 and NPP
TLE Epoch: 2012 8 20.  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)
 08/21/2012   07:41:35   (  49.94, -81.48) 08/21/2012   07:43:36    (  50.51, -84.45)  220.12            121
 08/21/2012   09:23:41   (  49.89,-107.03) 08/21/2012   09:25:07    (  50.45,-109.85)  210.36             86
 08/21/2012   17:31:47   (  49.96, -70.31) 08/21/2012   17:30:29    (  49.66, -72.18)  138.28             78
 08/21/2012   19:13:52   (  49.95, -95.83) 08/21/2012   19:11:59    (  49.67, -97.56)  128.13            113
 08/21/2012   20:55:57   (  49.95,-121.35) 08/21/2012   20:53:29    (  49.67,-122.93)  118.00            148
 08/22/2012   07:36:54   (  28.71, -86.07) 08/22/2012   07:30:46    (  28.94, -87.07)  100.48            368
 08/22/2012   09:19:34   (  26.68,-112.14) 08/22/2012   09:12:51    (  26.88,-112.99)   87.56            403