Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 12 29.  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)
 12/29/2017   11:25:15   (  79.65, -93.33) 12/29/2017   11:24:48  (  79.64, -93.33)    0.16                27
 12/29/2017   12:14:37   ( -79.82,  75.66) 12/29/2017   12:15:28  ( -79.82,  75.54)    2.59                51
 01/01/2018   03:41:45   (  79.68,  22.77) 01/01/2018   03:41:41  (  79.67,  22.66)    2.23                 4
 01/01/2018   04:31:05   ( -79.93,-167.65) 01/01/2018   04:32:18  ( -79.93,-167.58)    1.52                73
 01/03/2018   19:08:53   ( -79.55, -29.90) 01/03/2018   19:07:54  ( -79.56, -29.86)    1.06                59
 01/03/2018   19:58:12   (  79.81, 139.66) 01/03/2018   19:58:30  (  79.82, 139.79)    2.73                18
 01/06/2018   11:25:22   ( -79.61,  86.40) 01/06/2018   11:24:46  ( -79.61,  86.40)    0.25                36
 01/06/2018   12:14:41   (  79.86,-104.03) 01/06/2018   12:15:22  (  79.87,-103.94)    1.98                41
 01/09/2018   03:41:49   ( -79.70,-157.06) 01/09/2018   03:41:36  ( -79.70,-157.08)    0.39                13
 01/09/2018   04:31:08   (  79.95,  12.53) 01/09/2018   04:32:12  (  79.95,  12.63)    1.94                64
 01/11/2018   19:08:58   (  79.48, 149.60) 01/11/2018   19:07:51  (  79.47, 149.47)    2.76                67