Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 12 30.  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)
 01/01/2016   09:46:10   ( -79.20, 108.32) 01/01/2016   09:45:29  ( -79.20, 108.39)    1.58                41
 01/01/2016   10:35:29   (  79.47, -82.28) 01/01/2016   10:36:06  (  79.46, -82.32)    0.94                37
 01/04/2016   02:02:35   ( -79.31,-135.11) 01/04/2016   02:02:19  ( -79.31,-135.02)    1.94                16
 01/04/2016   02:51:54   (  79.57,  34.31) 01/04/2016   02:52:56  (  79.56,  34.30)    0.21                62
 01/06/2016   17:29:43   (  79.00, 171.21) 01/06/2016   17:28:36  (  78.99, 171.08)    2.90                67
 01/06/2016   18:19:02   ( -79.32, -19.11) 01/06/2016   18:19:12  ( -79.32, -19.22)    2.45                10
 01/09/2016   09:46:04   (  79.20, -71.66) 01/09/2016   09:45:22  (  79.20, -71.62)    0.81                42
 01/09/2016   10:35:23   ( -79.52,  98.11) 01/09/2016   10:35:58  ( -79.52,  98.16)    1.13                35
 01/12/2016   02:02:28   (  79.31,  44.93) 01/12/2016   02:02:12  (  79.30,  44.92)    0.28                16