Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 7 18.  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,  63.37) 07/20/2015   00:23:23  (  78.21,  63.27)    2.36                69
 07/20/2015   01:13:45   ( -78.82,-125.86) 07/20/2015   01:13:53  ( -78.82,-125.81)    1.17                 8
 07/22/2015   16:40:52   (  78.46,-179.56) 07/22/2015   16:40:10  (  78.45,-179.63)    1.75                42
 07/22/2015   17:30:07   ( -78.97,  -9.12) 07/22/2015   17:30:42  ( -78.97,  -9.05)    1.74                35
 07/25/2015   08:57:12   (  78.68, -62.50) 07/25/2015   08:56:57  (  78.68, -62.48)    0.69                15
 07/25/2015   09:46:32   ( -78.98, 106.83) 07/25/2015   09:47:35  ( -78.97, 106.73)    2.21                63
 07/28/2015   00:24:20   ( -78.27,-116.36) 07/28/2015   00:23:16  ( -78.26,-116.48)    2.78                64
 07/28/2015   01:13:34   (  78.76,  53.82) 07/28/2015   01:13:47  (  78.76,  53.76)    1.36                13
 07/30/2015   16:40:36   ( -78.64,   1.40) 07/30/2015   16:39:59  ( -78.64,   1.52)    2.81                37