Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 3 20.  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)
 03/22/2015   00:24:50   ( -78.78,-113.46) 03/22/2015   00:24:43  ( -78.78,-113.44)    0.49                 7
 03/22/2015   01:14:05   (  79.21,  56.77) 03/22/2015   01:15:15  (  79.22,  56.87)    2.26                70
 03/24/2015   15:52:01   (  78.34,-167.54) 03/24/2015   15:51:01  (  78.33,-167.66)    3.00                60
 03/24/2015   16:41:16   ( -78.86,   2.88) 03/24/2015   16:41:33  ( -78.85,   2.82)    1.30                17
 03/27/2015   08:08:23   (  78.60, -50.30) 03/27/2015   08:07:46  (  78.59, -50.33)    0.77                37
 03/27/2015   08:57:39   ( -79.07, 120.01) 03/27/2015   08:58:19  ( -79.07, 120.04)    0.75                40
 03/30/2015   00:24:48   (  78.74,  66.37) 03/30/2015   00:24:34  (  78.74,  66.33)    0.91                14
 03/30/2015   01:14:04   ( -79.20,-123.24) 03/30/2015   01:15:07  ( -79.20,-123.21)    0.47                63
 04/01/2015   15:51:58   ( -78.46,  13.12) 04/01/2015   15:50:49  ( -78.46,  13.12)    0.26                69