Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 12 13.  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)
 12/13/2018   19:08:21   (  79.56, 150.16) 12/13/2018   19:08:07  (  79.56, 150.13)    0.69                14
 12/13/2018   19:57:42   ( -79.78, -40.58) 12/13/2018   19:58:46  ( -79.77, -40.71)    2.86                64
 12/16/2018   10:35:29   ( -79.38,  97.17) 12/16/2018   10:34:22  ( -79.38,  97.13)    0.83                67
 12/16/2018   11:24:47   (  79.69, -93.05) 12/16/2018   11:24:57  (  79.68, -93.04)    0.35                10
 12/19/2018   02:51:56   ( -79.51,-146.09) 12/19/2018   02:51:13  ( -79.51,-146.07)    0.27                43
 12/19/2018   03:41:15   (  79.77,  23.45) 12/19/2018   03:41:49  (  79.77,  23.51)    1.30                34
 12/21/2018   19:08:24   ( -79.59, -29.61) 12/21/2018   19:08:05  ( -79.60, -29.55)    1.54                19
 12/21/2018   19:57:43   (  79.85, 139.94) 12/21/2018   19:58:41  (  79.86, 140.06)    2.58                58
 12/24/2018   10:35:33   (  79.37, -82.96) 12/24/2018   10:34:21  (  79.36, -83.02)    1.36                72
 12/24/2018   11:24:51   ( -79.71,  87.11) 12/24/2018   11:24:56  ( -79.72,  87.25)    2.96                 5
 12/27/2018   02:51:58   (  79.52,  33.97) 12/27/2018   02:51:10  (  79.52,  33.99)    0.36                48