Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 7 19.  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)
 07/20/2015   00:24:32   (  78.22,  63.38) 07/20/2015   00:23:23  (  78.21,  63.27)    2.53                69
 07/20/2015   01:13:45   ( -78.82,-125.86) 07/20/2015   01:13:53  ( -78.82,-125.81)    1.03                 8
 07/22/2015   16:40:53   (  78.42,-179.75) 07/22/2015   16:40:11  (  78.41,-179.86)    2.62                42
 07/22/2015   17:30:08   ( -78.93,  -9.34) 07/22/2015   17:30:43  ( -78.93,  -9.31)    0.86                35
 07/25/2015   08:57:14   (  78.60, -62.91) 07/25/2015   08:56:59  (  78.60, -62.97)    1.40                15
 07/25/2015   09:46:29   ( -79.11, 107.60) 07/25/2015   09:47:31  ( -79.11, 107.69)    2.00                62
 07/28/2015   00:24:18   ( -78.37,-115.87) 07/28/2015   00:23:13  ( -78.37,-115.88)    0.28                65
 07/28/2015   01:13:32   (  78.85,  54.36) 07/28/2015   01:13:44  (  78.86,  54.41)    1.17                12
 07/30/2015   16:40:41   ( -78.45,   0.41) 07/30/2015   16:40:04  ( -78.44,   0.28)    3.01                37