Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 12 17.  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)
 12/19/2018   02:51:56   ( -79.52,-146.04) 12/19/2018   02:51:13  ( -79.52,-145.99)    1.10                43
 12/19/2018   03:41:15   (  79.78,  23.52) 12/19/2018   03:41:49  (  79.78,  23.62)    2.09                34
 12/21/2018   19:08:22   ( -79.63, -29.32) 12/21/2018   19:08:03  ( -79.64, -29.18)    3.02                19
 12/21/2018   19:57:44   (  79.78, 139.43) 12/21/2018   19:58:43  (  79.78, 139.32)    2.37                59
 12/24/2018   10:35:30   (  79.45, -82.41) 12/24/2018   10:34:18  (  79.45, -82.36)    1.00                72
 12/24/2018   11:24:52   ( -79.64,  86.58) 12/24/2018   11:24:58  ( -79.64,  86.53)    1.09                 6
 12/27/2018   02:52:00   (  79.44,  33.45) 12/27/2018   02:51:13  (  79.44,  33.32)    2.78                47
 12/27/2018   03:41:19   ( -79.75,-156.73) 12/27/2018   03:41:49  ( -79.75,-156.66)    1.56                30
 12/29/2018   19:08:26   (  79.59, 150.34) 12/29/2018   19:08:03  (  79.59, 150.35)    0.25                23