Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 6 11.  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)
 06/12/2018   19:58:20   (  79.51, 137.35) 06/12/2018   19:58:20  (  79.52, 137.39)    0.84                 0
 06/12/2018   20:45:23   ( -81.58,  -0.87) 06/12/2018   20:46:36  ( -80.85,  -2.06)   83.86                73
 06/15/2018   11:25:28   ( -79.32,  84.29) 06/15/2018   11:24:36  ( -79.33,  84.33)    0.87                52
 06/15/2018   12:14:47   (  79.58,-106.35) 06/15/2018   12:15:13  (  79.58,-106.31)    0.80                26
 06/18/2018   03:41:53   ( -79.42,-159.16) 06/18/2018   03:41:27  ( -79.42,-159.12)    0.94                26
 06/18/2018   04:31:12   (  79.67,  10.21) 06/18/2018   04:32:04  (  79.67,  10.27)    1.17                52
 06/20/2018   19:11:11   (  72.93, 126.19) 06/20/2018   19:09:58  (  73.24, 124.30)   70.29                73
 06/20/2018   19:58:19   ( -79.52, -42.62) 06/20/2018   19:58:19  ( -79.52, -42.55)    1.44                 0
 06/23/2018   11:25:27   (  79.24, -96.23) 06/23/2018   11:24:37  (  79.23, -96.36)    2.85                50