Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 8 17.  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)
 08/18/2015   08:57:21   ( -78.53, 116.63) 08/18/2015   08:56:39  ( -78.53, 116.61)    0.50                42
 08/18/2015   09:46:38   (  78.89, -73.75) 08/18/2015   09:47:14  (  78.88, -73.89)    3.10                36
 08/21/2015   01:13:41   ( -78.80,-126.01) 08/21/2015   01:13:23  ( -78.81,-125.89)    2.72                18
 08/21/2015   02:02:59   (  79.11,  43.44) 08/21/2015   02:03:59  (  79.11,  43.47)    0.58                60
 08/23/2015   16:40:49   (  78.45,-179.62) 08/23/2015   16:39:39  (  78.46,-179.55)    1.79                70
 08/23/2015   17:30:06   ( -78.89,  -9.61) 08/23/2015   17:30:13  ( -78.89,  -9.54)    1.60                 7
 08/26/2015   08:57:11   (  78.65, -62.68) 08/26/2015   08:56:26  (  78.66, -62.56)    2.78                45
 08/26/2015   09:46:29   ( -79.04, 107.18) 08/26/2015   09:47:01  ( -79.05, 107.29)    2.45                32
 08/29/2015   01:13:36   (  78.71,  53.53) 08/29/2015   01:13:17  (  78.71,  53.51)    0.60                19