Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2014 4 24.  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)
 04/25/2014   08:08:48   (  77.26, -56.70) 04/25/2014   08:07:59  (  77.27, -56.64)    1.68                49
 04/25/2014   08:58:04   ( -77.79, 113.11) 04/25/2014   08:58:32  ( -77.79, 113.11)    0.02                28
 04/28/2014   00:25:10   (  77.51,  60.19) 04/28/2014   00:24:53  (  77.52,  60.28)    2.61                17
 04/28/2014   01:14:27   ( -77.99,-130.12) 04/28/2014   01:15:27  ( -77.99,-130.08)    1.06                60
 04/30/2014   15:52:22   ( -76.99,   6.40) 04/30/2014   15:51:21  ( -76.99,   6.38)    0.84                61
 04/30/2014   16:41:34   (  77.61, 176.46) 04/30/2014   16:41:51  (  77.60, 176.43)    0.91                17
 05/03/2014   08:08:42   ( -77.17, 122.94) 05/03/2014   08:08:16  ( -77.15, 122.84)    2.73                26
 05/03/2014   08:57:54   (  77.77, -66.95) 05/03/2014   08:58:46  (  77.76, -67.05)    2.63                52
 05/05/2014   23:35:45   (  76.81,  69.91) 05/05/2014   23:34:38  (  76.81,  69.86)    1.38                67