Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 12 30.  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)
 01/01/2018   03:41:45   (  79.68,  22.77) 01/01/2018   03:41:41  (  79.67,  22.66)    2.27                 4
 01/01/2018   04:31:05   ( -79.92,-167.66) 01/01/2018   04:32:18  ( -79.93,-167.59)    1.52                73
 01/03/2018   19:08:53   ( -79.55, -29.91) 01/03/2018   19:07:54  ( -79.55, -29.87)    0.94                59
 01/03/2018   19:58:12   (  79.81, 139.66) 01/03/2018   19:58:30  (  79.82, 139.79)    2.58                18
 01/06/2018   11:25:22   ( -79.61,  86.40) 01/06/2018   11:24:46  ( -79.61,  86.38)    0.39                36
 01/06/2018   12:14:41   (  79.87,-104.02) 01/06/2018   12:15:22  (  79.87,-103.94)    1.61                41
 01/09/2018   03:41:49   ( -79.70,-157.05) 01/09/2018   03:41:36  ( -79.70,-157.09)    1.07                13
 01/09/2018   04:31:09   (  79.92,  12.26) 01/09/2018   04:32:13  (  79.92,  12.32)    1.25                64
 01/11/2018   19:08:55   (  79.60, 150.43) 01/11/2018   19:07:47  (  79.60, 150.55)    2.57                68