Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 6 15.  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)
 06/17/2017   19:08:26   (  79.28, 148.17) 06/17/2017   19:07:35  (  79.29, 148.28)    2.37                51
 06/17/2017   19:57:47   ( -79.52, -42.58) 06/17/2017   19:58:13  ( -79.53, -42.46)    2.81                26
 06/20/2017   11:24:51   (  79.38, -95.33) 06/20/2017   11:24:27  (  79.38, -95.20)    2.82                24
 06/20/2017   12:14:12   ( -79.62,  73.96) 06/20/2017   12:15:05  ( -79.63,  74.11)    3.19                53
 06/23/2017   02:52:09   ( -78.73,-151.03) 06/23/2017   02:50:55  ( -78.76,-151.18)    5.07                74
 06/23/2017   03:41:19   (  79.35,  20.37) 06/23/2017   03:41:23  (  79.34,  20.24)    2.72                 4
 06/25/2017   19:08:23   ( -79.22, -32.23) 06/25/2017   19:07:36  ( -79.22, -32.25)    0.44                47
 06/25/2017   19:57:42   (  79.47, 137.07) 06/25/2017   19:58:13  (  79.47, 137.01)    1.44                31
 06/28/2017   11:24:47   ( -79.34,  84.45) 06/28/2017   11:24:27  ( -79.35,  84.50)    1.19                20