Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 3 16.  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   12:15:01   ( -79.71,  74.72) 03/19/2018   12:14:57  ( -79.72,  74.82)    2.02                 4
 03/19/2018   13:04:07   (  80.39,-111.87) 03/19/2018   13:05:21  (  80.30,-111.73)    9.59                74
 03/22/2018   03:42:06   (  79.57,  21.97) 03/22/2018   03:41:12  (  79.58,  22.10)    2.73                54
 03/22/2018   04:31:29   ( -79.74,-169.21) 03/22/2018   04:31:53  ( -79.73,-169.30)    2.01                24
 03/24/2018   19:58:34   (  79.59, 137.98) 03/24/2018   19:58:08  (  79.59, 137.94)    0.90                26
 03/24/2018   20:47:55   ( -79.83, -52.64) 03/24/2018   20:48:46  ( -79.83, -52.58)    1.22                51
 03/27/2018   11:27:08   ( -75.49,  68.14) 03/27/2018   11:25:54  ( -75.76,  66.75)   48.51                74
 03/27/2018   12:14:58   (  79.72,-105.24) 03/27/2018   12:14:59  (  79.72,-105.11)    2.69                 1
 03/30/2018   03:42:06   ( -79.51,-158.46) 03/30/2018   03:41:18  ( -79.50,-158.57)    2.53                48