Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2014 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)
 03/21/2014   16:43:58   ( -70.59, -20.70) 03/21/2014   16:42:45  ( -70.81, -22.24)   61.77                73
 03/21/2014   17:30:48   (  78.37, 167.83) 03/21/2014   17:30:48  (  78.38, 167.90)    1.65                 0
 03/21/2014   18:17:21   ( -81.53,  36.98) 03/21/2014   18:18:34  ( -80.81,  35.75)   82.77                73
 03/24/2014   08:57:59   ( -78.00, 114.30) 03/24/2014   08:57:16  ( -78.00, 114.26)    0.97                43
 03/24/2014   09:47:12   (  78.55, -75.38) 03/24/2014   09:47:46  (  78.56, -75.28)    2.48                34
 03/27/2014   01:14:20   ( -78.26,-128.60) 03/27/2014   01:14:11  ( -78.26,-128.58)    0.49                 9
 03/27/2014   02:03:37   (  78.62,  40.91) 03/27/2014   02:04:46  (  78.62,  40.83)    1.85                69
 03/29/2014   16:41:26   (  78.00, 178.41) 03/29/2014   16:40:34  (  78.01, 178.48)    1.89                52
 03/29/2014   17:30:42   ( -78.50, -11.51) 03/29/2014   17:31:07  ( -78.51, -11.38)    3.10                25
 04/01/2014   08:57:50   (  78.14, -65.04) 04/01/2014   08:57:33  (  78.14, -65.06)    0.33                17