Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 4 14.  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)
 04/14/2016   10:36:06   ( -79.08,  95.11) 04/14/2016   10:35:03  ( -79.07,  94.97)    3.17                63
 04/14/2016   11:25:23   (  79.43, -95.03) 04/14/2016   11:25:37  (  79.43, -95.04)    0.28                14
 04/17/2016   02:52:28   ( -79.28,-147.75) 04/17/2016   02:51:53  ( -79.28,-147.73)    0.39                35
 04/17/2016   03:41:49   (  79.47,  21.12) 04/17/2016   03:42:32  (  79.46,  20.99)    2.81                43
 04/19/2016   19:08:53   ( -79.35, -31.42) 04/19/2016   19:08:47  ( -79.35, -31.46)    0.75                 6
 04/19/2016   19:58:10   (  79.68, 138.52) 04/19/2016   19:59:21  (  79.69, 138.66)    2.86                71
 04/22/2016   10:35:57   (  79.16, -84.41) 04/22/2016   10:35:03  (  79.15, -84.50)    2.18                54
 04/22/2016   11:25:16   ( -79.48,  85.34) 04/22/2016   11:25:39  ( -79.48,  85.34)    0.17                23
 04/25/2016   02:52:18   (  79.32,  32.49) 04/25/2016   02:51:53  (  79.32,  32.50)    0.40                25
 04/25/2016   03:41:38   ( -79.60,-157.96) 04/25/2016   03:42:30  ( -79.60,-157.86)    2.37                52
 04/27/2016   18:19:23   ( -79.12, -20.48) 04/27/2016   18:18:10  ( -79.13, -20.46)    0.58                73