Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 1 15.  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)
 01/17/2018   03:41:52   (  79.73,  23.18) 01/17/2018   03:41:30  (  79.73,  23.27)    1.85                22
 01/17/2018   04:31:15   ( -79.87,-168.08) 01/17/2018   04:32:11  ( -79.86,-168.18)    2.22                56
 01/19/2018   19:10:26   ( -75.75, -46.99) 01/19/2018   19:09:12  ( -76.00, -48.31)   45.55                74
 01/19/2018   19:58:19   (  79.80, 139.62) 01/19/2018   19:58:20  (  79.81, 139.76)    2.86                 1
 01/22/2018   11:25:28   ( -79.62,  86.49) 01/22/2018   11:24:35  ( -79.62,  86.52)    0.70                53
 01/22/2018   12:14:49   (  79.80,-104.52) 01/22/2018   12:15:14  (  79.79,-104.62)    2.05                25
 01/25/2018   03:41:55   ( -79.72,-156.85) 01/25/2018   03:41:25  ( -79.73,-156.74)    2.30                30
 01/25/2018   04:31:16   (  79.90,  12.15) 01/25/2018   04:32:04  (  79.90,  12.15)    0.18                48
 01/27/2018   19:58:25   ( -79.72, -41.03) 01/27/2018   19:58:19  ( -79.71, -41.12)    1.99                 6