Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 6 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)
 06/20/2018   19:11:12   (  72.89, 126.11) 06/20/2018   19:09:59  (  73.20, 124.22)   70.69                73
 06/20/2018   19:58:19   ( -79.52, -42.61) 06/20/2018   19:58:19  ( -79.52, -42.53)    1.58                 0
 06/23/2018   11:25:27   (  79.25, -96.18) 06/23/2018   11:24:37  (  79.24, -96.32)    3.10                50
 06/23/2018   12:14:46   ( -79.57,  73.64) 06/23/2018   12:15:12  ( -79.58,  73.75)    2.27                26
 06/26/2018   03:41:52   (  79.34,  20.26) 06/26/2018   03:41:28  (  79.33,  20.16)    2.11                24
 06/26/2018   04:31:13   ( -79.59,-170.40) 06/26/2018   04:32:06  ( -79.58,-170.54)    3.14                53
 06/28/2018   19:10:28   ( -75.10, -48.86) 06/28/2018   19:09:14  ( -75.36, -50.20)   47.53                74
 06/28/2018   19:58:17   (  79.46, 136.95) 06/28/2018   19:58:19  (  79.45, 136.91)    0.83                 2
 07/01/2018   11:25:24   ( -79.29,  84.09) 07/01/2018   11:24:34  ( -79.29,  84.11)    0.56                50