Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 12 23.  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)
 12/24/2017   02:52:18   (  79.49,  33.83) 12/24/2017   02:51:06  (  79.49,  33.83)    0.17                72
 12/24/2017   03:41:40   ( -79.68,-157.21) 12/24/2017   03:41:46  ( -79.67,-157.33)    2.49                 6
 12/26/2017   19:08:46   (  79.61, 150.53) 12/26/2017   19:07:56  (  79.62, 150.66)    2.88                50
 12/26/2017   19:58:08   ( -79.79, -40.47) 12/26/2017   19:58:36  ( -79.79, -40.45)    0.37                28
 12/29/2017   11:25:15   (  79.65, -93.34) 12/29/2017   11:24:48  (  79.64, -93.33)    0.11                27
 12/29/2017   12:14:37   ( -79.83,  75.69) 12/29/2017   12:15:28  ( -79.82,  75.57)    2.56                51
 01/01/2018   03:41:45   (  79.67,  22.76) 01/01/2018   03:41:41  (  79.67,  22.66)    2.05                 4
 01/01/2018   04:31:05   ( -79.93,-167.64) 01/01/2018   04:32:18  ( -79.93,-167.56)    1.61                73
 01/03/2018   19:08:52   ( -79.59, -29.63) 01/03/2018   19:07:53  ( -79.59, -29.57)    1.18                59
 01/03/2018   19:58:12   (  79.81, 139.64) 01/03/2018   19:58:30  (  79.82, 139.77)    2.92                18
 01/06/2018   11:25:21   ( -79.65,  86.66) 01/06/2018   11:24:45  ( -79.64,  86.67)    0.28                36