Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 2 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)
 02/15/2018   11:25:31   (  79.57, -93.76) 02/15/2018   11:24:18  (  79.58, -93.76)    0.24                73
 02/15/2018   12:14:52   ( -79.80,  75.59) 02/15/2018   12:14:56  ( -79.80,  75.57)    0.28                 4
 02/18/2018   03:41:58   (  79.64,  22.62) 02/18/2018   03:41:09  (  79.64,  22.59)    0.72                49
 02/18/2018   04:31:19   ( -79.87,-167.99) 02/18/2018   04:31:47  ( -79.87,-168.04)    0.99                28
 02/20/2018   19:58:24   (  79.74, 139.25) 02/20/2018   19:57:59  (  79.74, 139.22)    0.84                25
 02/20/2018   20:47:46   ( -79.93, -51.60) 02/20/2018   20:48:38  ( -79.93, -51.65)    1.16                52
 02/23/2018   12:14:51   (  79.80,-104.41) 02/23/2018   12:14:50  (  79.80,-104.43)    0.47                 1
 02/23/2018   13:02:57   ( -81.72,  92.09) 02/23/2018   13:04:11  ( -81.31,  92.33)   46.56                74
 02/26/2018   03:41:56   ( -79.69,-157.00) 02/26/2018   03:41:01  ( -79.69,-156.95)    1.06                55