Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 6 13.  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)
 06/15/2018   11:25:28   ( -79.32,  84.30) 06/15/2018   11:24:36  ( -79.33,  84.34)    1.00                52
 06/15/2018   12:14:47   (  79.58,-106.32) 06/15/2018   12:15:13  (  79.58,-106.28)    0.83                26
 06/18/2018   03:41:53   ( -79.42,-159.16) 06/18/2018   03:41:27  ( -79.43,-159.11)    1.09                26
 06/18/2018   04:31:12   (  79.67,  10.23) 06/18/2018   04:32:04  (  79.67,  10.29)    1.25                52
 06/20/2018   19:11:10   (  72.99, 126.30) 06/20/2018   19:09:57  (  73.30, 124.42)   69.76                73
 06/20/2018   19:58:19   ( -79.52, -42.63) 06/20/2018   19:58:19  ( -79.52, -42.55)    1.62                 0
 06/23/2018   11:25:27   (  79.24, -96.24) 06/23/2018   11:24:37  (  79.23, -96.36)    2.68                50
 06/23/2018   12:14:45   ( -79.61,  73.88) 06/23/2018   12:15:11  ( -79.61,  74.01)    2.57                26
 06/26/2018   03:41:52   (  79.37,  20.46) 06/26/2018   03:41:28  (  79.36,  20.40)    1.33                24