Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 3 18.  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)
 03/19/2018   12:15:02   ( -79.69,  74.60) 03/19/2018   12:14:58  ( -79.70,  74.68)    1.75                 4
 03/19/2018   13:04:08   (  80.34,-112.31) 03/19/2018   13:05:22  (  80.27,-112.20)    8.74                74
 03/22/2018   03:42:06   (  79.56,  21.87) 03/22/2018   03:41:12  (  79.57,  21.97)    2.00                54
 03/22/2018   04:31:29   ( -79.72,-169.32) 03/22/2018   04:31:53  ( -79.71,-169.44)    2.72                24
 03/24/2018   19:58:34   (  79.58, 137.91) 03/24/2018   19:58:08  (  79.57, 137.80)    2.27                26
 03/24/2018   20:47:55   ( -79.82, -52.72) 03/24/2018   20:48:46  ( -79.82, -52.73)    0.16                51
 03/27/2018   11:27:25   ( -74.68,  65.98) 03/27/2018   11:26:12  ( -74.94,  64.25)   57.83                73
 03/27/2018   12:14:59   (  79.71,-105.27) 03/27/2018   12:15:00  (  79.71,-105.25)    0.56                 1
 03/30/2018   03:42:06   ( -79.55,-158.19) 03/30/2018   03:41:17  ( -79.55,-158.16)    0.68                49