Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2014 12 11.  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)
 12/13/2014   06:29:16   ( -77.69, 149.95) 12/13/2014   06:29:02  ( -77.69, 150.04)    2.35                14
 12/13/2014   07:18:29   (  78.24, -39.88) 12/13/2014   07:19:33  (  78.24, -39.87)    0.28                64
 12/15/2014   21:56:30   (  76.91,  95.14) 12/15/2014   21:55:27  (  76.90,  95.04)    2.76                63
 12/15/2014   22:45:35   ( -77.93, -93.05) 12/15/2014   22:45:48  ( -77.94, -92.98)    1.93                13
 12/18/2014   14:12:39   (  77.58,-146.35) 12/18/2014   14:12:03  (  77.58,-146.25)    2.51                36
 12/18/2014   15:01:53   ( -78.17,  23.96) 12/18/2014   15:02:34  ( -78.18,  24.03)    1.74                41
 12/21/2014   06:28:55   (  77.86, -29.21) 12/21/2014   06:28:48  (  77.86, -29.13)    2.08                 7
 12/21/2014   07:18:09   ( -78.44, 141.21) 12/21/2014   07:19:19  ( -78.45, 141.28)    1.76                70
 12/23/2014   21:56:04   ( -77.21, -83.63) 12/23/2014   21:55:10  ( -77.21, -83.69)    1.44                54