Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 2 13.  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, -93.58) 02/15/2018   11:24:18  (  79.60, -93.57)    0.14                73
 02/15/2018   12:14:53   ( -79.79,  75.50) 02/15/2018   12:14:57  ( -79.79,  75.48)    0.38                 4
 02/18/2018   03:41:58   (  79.67,  22.81) 02/18/2018   03:41:09  (  79.66,  22.78)    0.72                49
 02/18/2018   04:31:20   ( -79.86,-168.07) 02/18/2018   04:31:48  ( -79.86,-168.13)    1.03                28
 02/20/2018   19:58:24   (  79.73, 139.18) 02/20/2018   19:57:59  (  79.73, 139.13)    0.93                25
 02/20/2018   20:47:46   ( -79.92, -51.67) 02/20/2018   20:48:38  ( -79.92, -51.73)    1.26                52
 02/23/2018   12:14:51   (  79.79,-104.48) 02/23/2018   12:14:50  (  79.79,-104.52)    0.70                 1
 02/23/2018   13:02:58   ( -81.71,  91.57) 02/23/2018   13:04:12  ( -81.30,  91.83)   45.80                74
 02/26/2018   03:41:57   ( -79.68,-157.05) 02/26/2018   03:41:02  ( -79.68,-157.02)    0.71                55