Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 3 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)
 03/18/2016   19:08:54   ( -79.44, -30.70) 03/18/2016   19:08:41  ( -79.44, -30.69)    0.12                13
 03/18/2016   19:58:13   (  79.70, 138.79) 03/18/2016   19:59:17  (  79.71, 138.85)    1.30                64
 03/21/2016   10:36:02   (  79.20, -84.03) 03/21/2016   10:34:54  (  79.20, -84.09)    1.39                68
 03/21/2016   11:25:20   ( -79.56,  85.98) 03/21/2016   11:25:29  ( -79.56,  86.08)    2.26                 9
 03/24/2016   02:52:27   (  79.38,  33.03) 03/24/2016   02:51:41  (  79.39,  33.13)    2.33                46
 03/24/2016   03:41:49   ( -79.58,-157.95) 03/24/2016   03:42:21  ( -79.58,-157.97)    0.38                32
 03/26/2016   19:08:55   (  79.43, 149.25) 03/26/2016   19:08:32  (  79.44, 149.31)    1.42                23
 03/26/2016   19:58:16   ( -79.67, -41.44) 03/26/2016   19:59:11  ( -79.66, -41.49)    1.24                55
 03/29/2016   10:38:09   ( -73.32,  75.24) 03/29/2016   10:36:56  ( -73.58,  73.49)   62.27                73
 03/29/2016   11:25:21   (  79.55, -94.08) 03/29/2016   11:25:21  (  79.55, -93.99)    2.13                 0
 04/01/2016   02:52:31   ( -79.24,-147.90) 04/01/2016   02:51:38  ( -79.23,-148.05)    3.12                53