Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 12 1.  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)
 12/03/2015   01:13:15   (  78.99,  55.27) 12/03/2015   01:12:02  (  79.00,  55.39)    2.73                73
 12/03/2015   02:02:36   ( -79.24,-135.58) 12/03/2015   02:02:41  ( -79.24,-135.59)    0.26                 5
 12/05/2015   17:29:41   (  79.07, 171.62) 12/05/2015   17:28:54  (  79.07, 171.66)    0.91                47
 12/05/2015   18:19:02   ( -79.32, -19.19) 12/05/2015   18:19:33  ( -79.31, -19.29)    2.18                31
 12/08/2015   09:46:05   (  79.21, -71.63) 12/08/2015   09:45:44  (  79.21, -71.57)    1.23                21
 12/08/2015   10:35:27   ( -79.42,  97.35) 12/08/2015   10:36:24  ( -79.41,  97.25)    2.03                57
 12/11/2015   01:13:12   ( -78.99,-124.75) 12/11/2015   01:12:00  ( -78.99,-124.68)    1.47                72
 12/11/2015   02:02:32   (  79.21,  44.28) 12/11/2015   02:02:38  (  79.21,  44.16)    2.65                 6
 12/13/2015   17:29:36   ( -79.06,  -8.44) 12/13/2015   17:28:51  ( -79.06,  -8.47)    0.62                45