Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 7 13.  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)
 07/14/2015   16:41:03   ( -78.42,   0.22) 07/14/2015   16:40:18  ( -78.42,   0.16)    1.48                45
 07/14/2015   17:30:18   (  78.87, 170.30) 07/14/2015   17:30:50  (  78.87, 170.26)    0.87                32
 07/17/2015   08:57:23   ( -78.68, 117.48) 07/17/2015   08:57:04  ( -78.69, 117.57)    2.05                19
 07/17/2015   09:46:39   (  79.08, -72.59) 07/17/2015   09:47:37  (  79.09, -72.46)    2.98                58
 07/20/2015   00:24:31   (  78.27,  63.63) 07/20/2015   00:23:22  (  78.27,  63.57)    1.47                69
 07/20/2015   01:13:45   ( -78.84,-125.78) 07/20/2015   01:13:53  ( -78.84,-125.69)    1.94                 8
 07/22/2015   16:40:49   (  78.54,-179.14) 07/22/2015   16:40:07  (  78.54,-179.10)    1.01                42
 07/22/2015   17:30:08   ( -78.89,  -9.60) 07/22/2015   17:30:44  ( -78.88,  -9.68)    1.87                36
 07/25/2015   08:57:11   (  78.65, -62.65) 07/25/2015   08:56:57  (  78.65, -62.66)    0.18                14