Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 1 14.  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)    1.81                22
 01/17/2018   04:31:15   ( -79.87,-168.06) 01/17/2018   04:32:11  ( -79.87,-168.17)    2.32                56
 01/19/2018   19:10:27   ( -75.70, -47.13) 01/19/2018   19:09:13  ( -75.96, -48.46)   46.04                74
 01/19/2018   19:58:19   (  79.80, 139.63) 01/19/2018   19:58:20  (  79.81, 139.76)    2.75                 1
 01/22/2018   11:25:28   ( -79.62,  86.50) 01/22/2018   11:24:35  ( -79.62,  86.53)    0.50                53
 01/22/2018   12:14:49   (  79.80,-104.51) 01/22/2018   12:15:14  (  79.79,-104.62)    2.25                25
 01/25/2018   03:41:55   ( -79.73,-156.83) 01/25/2018   03:41:25  ( -79.73,-156.73)    2.01                30
 01/25/2018   04:31:16   (  79.90,  12.16) 01/25/2018   04:32:04  (  79.90,  12.15)    0.45                48
 01/27/2018   19:58:25   ( -79.72, -41.01) 01/27/2018   19:58:19  ( -79.71, -41.12)    2.40                 6