Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 12 16.  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   02:51:55   ( -79.53,-145.93) 12/19/2018   02:51:12  ( -79.53,-145.87)    1.14                43
 12/19/2018   03:41:15   (  79.76,  23.36) 12/19/2018   03:41:49  (  79.77,  23.46)    2.16                34
 12/21/2018   19:08:22   ( -79.65, -29.21) 12/21/2018   19:08:03  ( -79.66, -29.06)    3.19                19
 12/21/2018   19:57:45   (  79.76, 139.26) 12/21/2018   19:58:44  (  79.76, 139.15)    2.19                59
 12/24/2018   10:35:31   (  79.42, -82.58) 12/24/2018   10:34:19  (  79.43, -82.52)    1.41                72
 12/24/2018   11:24:52   ( -79.65,  86.68) 12/24/2018   11:24:58  ( -79.65,  86.64)    0.69                 6
 12/27/2018   02:52:00   (  79.45,  33.53) 12/27/2018   02:51:13  (  79.45,  33.43)    2.04                47
 12/27/2018   03:41:19   ( -79.76,-156.65) 12/27/2018   03:41:49  ( -79.77,-156.54)    2.29                30
 12/29/2018   19:08:25   (  79.60, 150.40) 12/29/2018   19:08:02  (  79.60, 150.46)    1.42                23