Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 10 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)
 10/21/2015   09:46:22   (  79.00, -73.05) 10/21/2015   09:46:12  (  78.99, -73.12)    1.56                10
 10/21/2015   10:35:39   ( -79.40,  97.12) 10/21/2015   10:36:46  ( -79.40,  97.15)    0.66                67
 10/24/2015   01:13:32   ( -78.71,-126.44) 10/24/2015   01:12:29  ( -78.71,-126.54)    2.26                63
 10/24/2015   02:02:47   (  79.15,  43.75) 10/24/2015   02:03:01  (  79.15,  43.74)    0.23                14
 10/26/2015   17:29:54   ( -78.97,  -9.07) 10/26/2015   17:29:15  ( -78.98,  -9.01)    1.32                39
 10/26/2015   18:19:14   (  79.20, 159.97) 10/26/2015   18:19:53  (  79.19, 159.83)    2.91                39
 10/29/2015   09:46:19   ( -79.09, 107.53) 10/29/2015   09:46:05  ( -79.09, 107.57)    0.84                14
 10/29/2015   10:35:36   (  79.43, -82.65) 10/29/2015   10:36:39  (  79.44, -82.52)    2.89                63
 11/01/2015   01:13:25   (  78.81,  54.13) 11/01/2015   01:12:19  (  78.81,  54.12)    0.34                66