Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 3 10.  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)
 03/11/2015   08:08:28   (  78.67, -49.98) 03/11/2015   08:08:02  (  78.67, -49.87)    2.49                26
 03/11/2015   08:57:47   ( -79.00, 119.56) 03/11/2015   08:58:39  ( -79.00, 119.53)    0.62                52
 03/13/2015   23:39:58   ( -64.76,-130.95) 03/13/2015   23:38:45  ( -65.08,-132.84)   96.08                73
 03/14/2015   00:24:55   (  78.73,  66.27) 03/14/2015   00:24:53  (  78.73,  66.25)    0.45                 2
 03/14/2015   01:13:16   ( -80.99,-106.96) 03/14/2015   01:14:30  ( -80.78,-106.43)   24.99                74
 03/16/2015   15:52:03   ( -78.48,  13.16) 03/16/2015   15:51:08  ( -78.48,  13.18)    0.45                55
 03/16/2015   16:41:17   (  78.96,-176.52) 03/16/2015   16:41:39  (  78.97,-176.45)    1.49                22
 03/19/2015   08:08:25   ( -78.64, 129.90) 03/19/2015   08:07:55  ( -78.64, 129.93)    0.67                30
 03/19/2015   08:57:39   (  79.11, -59.72) 03/19/2015   08:58:26  (  79.12, -59.62)    2.14                47
 03/22/2015   00:24:47   ( -78.80,-113.31) 03/22/2015   00:24:43  ( -78.80,-113.33)    0.45                 4
 03/22/2015   01:14:02   (  79.22,  56.88) 03/22/2015   01:15:15  (  79.23,  56.95)    1.49                73
 03/24/2015   15:51:50   (  78.57,-166.29) 03/24/2015   15:50:55  (  78.57,-166.24)    1.20                55