Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 5 9.  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)
 05/11/2016   02:52:09   (  79.34,  32.62) 05/11/2016   02:51:54  (  79.35,  32.77)    3.02                15
 05/11/2016   03:41:32   ( -79.50,-158.67) 05/11/2016   03:42:35  ( -79.49,-158.78)    2.39                63
 05/13/2016   18:19:20   ( -79.00, -21.26) 05/13/2016   18:18:15  ( -78.99, -21.38)    2.83                65
 05/13/2016   19:08:36   (  79.39, 148.82) 05/13/2016   19:08:48  (  79.40, 148.90)    1.77                12
 05/16/2016   10:35:45   ( -79.12,  95.34) 05/16/2016   10:35:07  ( -79.11,  95.22)    2.75                38
 05/16/2016   11:25:01   (  79.50, -94.54) 05/16/2016   11:25:40  (  79.51, -94.44)    2.09                39
 05/19/2016   02:52:09   ( -79.27,-147.86) 05/19/2016   02:51:58  ( -79.26,-147.91)    1.07                11
 05/19/2016   03:41:29   (  79.49,  21.25) 05/19/2016   03:42:36  (  79.48,  21.13)    2.43                67
 05/21/2016   18:19:12   (  79.11, 159.40) 05/21/2016   18:18:11  (  79.12, 159.48)    1.74                61