Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 6 14.  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)
 06/15/2017   03:41:22   ( -79.45,-158.94) 06/15/2017   03:41:21  ( -79.46,-158.81)    2.89                 1
 06/17/2017   19:08:26   (  79.27, 148.11) 06/17/2017   19:07:35  (  79.28, 148.23)    2.68                51
 06/17/2017   19:57:46   ( -79.55, -42.38) 06/17/2017   19:58:12  ( -79.56, -42.23)    3.11                26
 06/20/2017   11:24:53   (  79.29, -95.92) 06/20/2017   11:24:30  (  79.28, -96.04)    2.76                23
 06/20/2017   12:14:14   ( -79.53,  73.35) 06/20/2017   12:15:08  ( -79.52,  73.24)    2.39                54
 06/23/2017   02:52:00   ( -79.07,-149.01) 06/23/2017   02:50:46  ( -79.08,-149.02)    0.64                74
 06/23/2017   03:41:18   (  79.37,  20.52) 06/23/2017   03:41:22  (  79.37,  20.46)    1.17                 4
 06/25/2017   19:08:22   ( -79.28, -31.85) 06/25/2017   19:07:35  ( -79.28, -31.76)    2.08                47
 06/25/2017   19:57:41   (  79.53, 137.46) 06/25/2017   19:58:12  (  79.53, 137.51)    1.14                31
 06/28/2017   11:24:47   ( -79.32,  84.28) 06/28/2017   11:24:28  ( -79.31,  84.22)    1.47                19