Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 2 12.  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   (  79.60, -93.54) 02/15/2018   11:24:18  (  79.60, -93.53)    0.21                73
 02/15/2018   12:14:53   ( -79.80,  75.55) 02/15/2018   12:14:57  ( -79.80,  75.54)    0.27                 4
 02/18/2018   03:41:57   (  79.67,  22.85) 02/18/2018   03:41:08  (  79.67,  22.83)    0.62                49
 02/18/2018   04:31:19   ( -79.87,-168.03) 02/18/2018   04:31:47  ( -79.86,-168.07)    0.92                28
 02/20/2018   19:58:24   (  79.74, 139.22) 02/20/2018   19:57:59  (  79.73, 139.18)    0.78                25
 02/20/2018   20:47:46   ( -79.93, -51.62) 02/20/2018   20:48:38  ( -79.93, -51.68)    1.11                52
 02/23/2018   12:14:51   (  79.80,-104.44) 02/23/2018   12:14:50  (  79.80,-104.46)    0.52                 1
 02/23/2018   13:02:57   ( -81.72,  92.06) 02/23/2018   13:04:11  ( -81.31,  92.30)   46.52                74
 02/26/2018   03:41:57   ( -79.69,-157.00) 02/26/2018   03:41:02  ( -79.69,-156.96)    0.91                55