Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 3 15.  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)
 03/16/2018   19:58:35   ( -79.60, -41.94) 03/16/2018   19:58:04  ( -79.61, -41.92)    0.49                31
 03/16/2018   20:47:55   (  79.81, 127.26) 03/16/2018   20:48:42  (  79.81, 127.22)    0.98                47
 03/19/2018   12:15:01   ( -79.71,  74.69) 03/19/2018   12:14:57  ( -79.71,  74.80)    2.37                 4
 03/19/2018   13:04:05   (  80.45,-111.29) 03/19/2018   13:05:19  (  80.35,-111.12)   10.69                74
 03/22/2018   03:42:08   (  79.49,  21.37) 03/22/2018   03:41:15  (  79.48,  21.25)    2.76                53
 03/22/2018   04:31:29   ( -79.73,-169.28) 03/22/2018   04:31:53  ( -79.73,-169.33)    1.06                24
 03/24/2018   19:58:33   (  79.61, 138.14) 03/24/2018   19:58:07  (  79.62, 138.18)    0.91                26
 03/24/2018   20:47:54   ( -79.85, -52.46) 03/24/2018   20:48:45  ( -79.86, -52.32)    3.03                51
 03/27/2018   11:26:45   ( -76.58,  71.54) 03/27/2018   11:25:31  ( -76.80,  70.46)   36.28                74