Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 12 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)
 12/16/2018   10:35:29   ( -79.40,  97.28) 12/16/2018   10:34:22  ( -79.40,  97.26)    0.50                67
 12/16/2018   11:24:48   (  79.67, -93.19) 12/16/2018   11:24:58  (  79.67, -93.17)    0.53                10
 12/19/2018   02:51:56   ( -79.52,-145.99) 12/19/2018   02:51:13  ( -79.53,-145.94)    1.16                43
 12/19/2018   03:41:15   (  79.78,  23.56) 12/19/2018   03:41:49  (  79.79,  23.67)    2.21                34
 12/21/2018   19:08:25   ( -79.53, -30.07) 12/21/2018   19:08:07  ( -79.52, -30.22)    3.05                18
 12/21/2018   19:57:44   (  79.79, 139.47) 12/21/2018   19:58:43  (  79.78, 139.37)    2.02                59
 12/24/2018   10:35:30   (  79.45, -82.39) 12/24/2018   10:34:18  (  79.45, -82.31)    1.69                72
 12/24/2018   11:24:52   ( -79.64,  86.61) 12/24/2018   11:24:58  ( -79.64,  86.59)    0.45                 6
 12/27/2018   02:51:59   (  79.48,  33.72) 12/27/2018   02:51:12  (  79.48,  33.65)    1.54                47
 12/27/2018   03:41:18   ( -79.78,-156.45) 12/27/2018   03:41:48  ( -79.79,-156.31)    2.78                30
 12/29/2018   19:08:25   (  79.62, 150.59) 12/29/2018   19:08:02  (  79.63, 150.69)    2.16                23