Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 12 24.  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)
 12/27/2018   02:52:00   (  79.46,  33.59) 12/27/2018   02:51:13  (  79.45,  33.46)    2.86                47
 12/27/2018   03:41:19   ( -79.76,-156.63) 12/27/2018   03:41:49  ( -79.76,-156.56)    1.54                30
 12/29/2018   19:08:26   (  79.57, 150.21) 12/29/2018   19:08:03  (  79.57, 150.22)    0.35                23
 12/29/2018   19:57:47   ( -79.79, -40.50) 12/29/2018   19:58:42  ( -79.78, -40.59)    1.83                55
 01/01/2019   10:36:38   ( -76.64,  84.09) 01/01/2019   10:35:24  ( -76.83,  83.09)   33.50                74
 01/01/2019   11:24:54   (  79.63, -93.44) 01/01/2019   11:24:56  (  79.62, -93.56)    2.66                 2
 01/04/2019   02:52:01   ( -79.51,-146.07) 01/04/2019   02:51:10  ( -79.51,-146.07)    0.30                51
 01/04/2019   03:41:20   (  79.77,  23.43) 01/04/2019   03:41:46  (  79.77,  23.50)    1.31                26
 01/06/2019   19:08:30   ( -79.54, -30.03) 01/06/2019   19:08:04  ( -79.53, -30.14)    2.45                26