Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 3 20.  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)
 03/21/2016   10:36:02   (  79.20, -84.07) 03/21/2016   10:34:54  (  79.19, -84.13)    1.24                68
 03/21/2016   11:25:19   ( -79.58,  86.19) 03/21/2016   11:25:28  ( -79.59,  86.30)    2.43                 9
 03/24/2016   02:52:27   (  79.38,  32.99) 03/24/2016   02:51:41  (  79.39,  33.11)    2.49                46
 03/24/2016   03:41:48   ( -79.61,-157.74) 03/24/2016   03:42:20  ( -79.61,-157.75)    0.27                32
 03/26/2016   19:08:54   (  79.47, 149.48) 03/26/2016   19:08:31  (  79.47, 149.55)    1.47                23
 03/26/2016   19:58:16   ( -79.66, -41.49) 03/26/2016   19:59:11  ( -79.66, -41.54)    1.18                55
 03/29/2016   10:38:10   ( -73.26,  75.12) 03/29/2016   10:36:57  ( -73.52,  73.36)   62.81                73
 03/29/2016   11:25:21   (  79.54, -94.11) 03/29/2016   11:25:21  (  79.55, -94.01)    2.04                 0
 04/01/2016   02:52:27   ( -79.39,-146.91) 04/01/2016   02:51:33  ( -79.40,-146.78)    2.89                54
 04/01/2016   03:41:48   (  79.57,  21.96) 04/01/2016   03:42:12  (  79.56,  21.86)    2.15                24
 04/03/2016   19:08:55   ( -79.41, -30.92) 04/03/2016   19:08:25  ( -79.41, -30.92)    0.24                30