Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 8 10.  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)
 08/10/2015   08:57:23   (  78.49, -63.56) 08/10/2015   08:56:47  (  78.48, -63.68)    2.78                36
 08/10/2015   09:46:39   ( -78.96, 106.66) 08/10/2015   09:47:20  ( -78.95, 106.61)    1.22                41
 08/13/2015   01:13:45   (  78.76,  53.76) 08/13/2015   01:13:32  (  78.76,  53.84)    1.81                13
 08/13/2015   02:03:02   ( -79.18,-136.14) 08/13/2015   02:04:06  ( -79.19,-135.99)    3.12                64
 08/15/2015   16:40:57   ( -78.36,  -0.11) 08/15/2015   16:39:51  ( -78.35,  -0.16)    1.17                66
 08/15/2015   17:30:10   (  78.88, 170.35) 08/15/2015   17:30:21  (  78.89, 170.43)    2.01                11
 08/18/2015   08:57:19   ( -78.56, 116.80) 08/18/2015   08:56:37  ( -78.56, 116.81)    0.41                42
 08/18/2015   09:46:36   (  78.91, -73.61) 08/18/2015   09:47:12  (  78.90, -73.71)    2.25                36
 08/21/2015   01:13:45   ( -78.61,-127.02) 08/21/2015   01:13:28  ( -78.61,-127.13)    2.44                17
 08/21/2015   02:02:58   (  79.12,  43.54) 08/21/2015   02:03:58  (  79.13,  43.61)    1.65                60
 08/23/2015   16:40:47   (  78.50,-179.37) 08/23/2015   16:39:37  (  78.51,-179.24)    2.99                70