Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 8 20.  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)
 08/21/2015   01:13:42   ( -78.76,-126.23) 08/21/2015   01:13:24  ( -78.76,-126.17)    1.32                18
 08/21/2015   02:03:00   (  79.07,  43.23) 08/21/2015   02:04:00  (  79.07,  43.19)    0.99                60
 08/23/2015   16:40:52   (  78.34, 179.81) 08/23/2015   16:39:42  (  78.33, 179.74)    1.52                70
 08/23/2015   17:30:09   ( -78.78, -10.24) 08/23/2015   17:30:16  ( -78.77, -10.32)    1.70                 7
 08/26/2015   08:57:12   (  78.64, -62.74) 08/26/2015   08:56:26  (  78.65, -62.61)    3.10                46
 08/26/2015   09:46:30   ( -79.03, 107.09) 08/26/2015   09:47:01  ( -79.04, 107.22)    2.76                31
 08/29/2015   01:13:35   (  78.80,  54.02) 08/29/2015   01:13:14  (  78.81,  54.14)    2.62                21
 08/29/2015   02:02:54   ( -79.15,-136.31) 08/29/2015   02:03:50  ( -79.15,-136.21)    2.14                56
 08/31/2015   16:40:46   ( -78.35,  -0.13) 08/31/2015   16:39:33  ( -78.34,  -0.20)    1.64                73
 08/31/2015   17:30:02   (  78.74, 169.59) 08/31/2015   17:30:07  (  78.74, 169.46)    3.01                 5
 09/03/2015   08:57:07   ( -78.58, 116.93) 09/03/2015   08:56:19  ( -78.57, 116.93)    0.24                48