Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 5 8.  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)
 05/08/2016   10:35:46   (  79.16, -84.45) 05/08/2016   10:35:05  (  79.15, -84.48)    0.72                41
 05/08/2016   11:25:05   ( -79.47,  85.24) 05/08/2016   11:25:41  ( -79.47,  85.26)    0.42                36
 05/11/2016   02:52:11   (  79.30,  32.33) 05/11/2016   02:51:56  (  79.31,  32.42)    2.12                15
 05/11/2016   03:41:31   ( -79.57,-158.18) 05/11/2016   03:42:33  ( -79.58,-158.04)    3.05                62
 05/13/2016   18:19:18   ( -79.08, -20.78) 05/13/2016   18:18:12  ( -79.09, -20.72)    1.45                66
 05/13/2016   19:08:37   (  79.35, 148.55) 05/13/2016   19:08:49  (  79.35, 148.54)    0.30                12
 05/16/2016   10:35:44   ( -79.17,  95.63) 05/16/2016   10:35:05  ( -79.17,  95.63)    0.01                39
 05/16/2016   11:25:03   (  79.43, -95.03) 05/16/2016   11:25:42  (  79.43, -95.10)    1.56                39
 05/19/2016   02:52:09   ( -79.28,-147.77) 05/19/2016   02:51:57  ( -79.28,-147.78)    0.37                12
 05/19/2016   03:41:29   (  79.50,  21.34) 05/19/2016   03:42:35  (  79.50,  21.25)    1.69                66
 05/21/2016   18:19:15   (  79.06, 159.05) 05/21/2016   18:18:13  (  79.06, 159.06)    0.27                62