Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2014 4 15.  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)
 04/17/2014   08:08:44   ( -77.35, 123.67) 04/17/2014   08:07:42  ( -77.36, 123.76)    2.61                62
 04/17/2014   08:57:58   (  77.87, -66.50) 04/17/2014   08:58:14  (  77.88, -66.43)    2.01                16
 04/20/2014   00:25:08   ( -77.40,-120.25) 04/20/2014   00:24:42  ( -77.39,-120.33)    2.20                26
 04/20/2014   01:14:21   (  77.96,  49.77) 04/20/2014   01:15:13  (  77.95,  49.68)    2.32                52
 04/22/2014   15:52:09   (  77.17,-172.89) 04/22/2014   15:51:02  (  77.18,-172.83)    1.74                67
 04/22/2014   16:41:24   ( -77.75,  -2.90) 04/22/2014   16:41:34  ( -77.75,  -2.88)    0.57                10
 04/25/2014   08:08:26   (  77.37, -56.21) 04/25/2014   08:07:57  (  77.37, -56.23)    0.48                29
 04/25/2014   08:57:42   ( -77.90, 113.65) 04/25/2014   08:58:30  ( -77.89, 113.59)    1.64                48
 04/27/2014   23:35:31   ( -76.94,-109.57) 04/27/2014   23:34:23  ( -76.93,-109.63)    1.82                68