Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2014 9 12.  Predictions up to the next  14.0 days:

     Date     Time(AURA) AURA Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/13/2014   14:13:28   (  75.79,-152.83) 09/13/2014   14:13:15  (  75.79,-152.79)    1.46                13
 09/13/2014   15:02:38   ( -76.63,  17.52) 09/13/2014   15:03:42  ( -76.63,  17.50)    0.40                64
 09/16/2014   05:40:47   ( -74.91, 152.99) 09/16/2014   05:39:45  ( -74.91, 152.99)    0.12                62
 09/16/2014   06:29:46   (  76.22, -35.61) 09/16/2014   06:30:01  (  76.23, -35.52)    2.66                15
 09/18/2014   21:57:06   ( -75.32, -90.03) 09/18/2014   21:56:33  ( -75.32, -90.05)    0.48                33
 09/18/2014   22:46:07   (  76.52,  81.26) 09/18/2014   22:46:51  (  76.53,  81.33)    2.17                44
 09/21/2014   13:29:31   (  57.09,-163.53) 09/21/2014   13:28:19  (  57.30,-164.94)   87.95                72
 09/21/2014   14:13:27   ( -75.59,  26.61) 09/21/2014   14:13:24  ( -75.58,  26.53)    2.68                 3
 09/21/2014   15:02:14   (  77.43,-159.49) 09/21/2014   15:03:28  (  77.38,-159.40)    6.03                74
 09/24/2014   05:40:36   (  75.04, -26.64) 09/24/2014   05:39:46  (  75.04, -26.63)    0.32                50