Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 6 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)
 06/26/2018   03:41:52   (  79.37,  20.47) 06/26/2018   03:41:28  (  79.36,  20.41)    1.24                24
 06/26/2018   04:31:13   ( -79.61,-170.22) 06/26/2018   04:32:06  ( -79.60,-170.32)    2.09                53
 06/28/2018   19:10:14   ( -75.78, -46.96) 06/28/2018   19:09:00  ( -76.00, -48.13)   40.38                74
 06/28/2018   19:58:16   (  79.48, 137.14) 06/28/2018   19:58:18  (  79.49, 137.18)    0.78                 2
 07/01/2018   11:25:25   ( -79.23,  83.72) 07/01/2018   11:24:36  ( -79.22,  83.57)    3.17                49
 07/01/2018   12:14:43   (  79.52,-106.72) 07/01/2018   12:15:12  (  79.51,-106.87)    3.20                29
 07/04/2018   03:41:49   ( -79.38,-159.41) 07/04/2018   03:41:26  ( -79.38,-159.42)    0.27                23
 07/04/2018   04:31:08   (  79.63,   9.92) 07/04/2018   04:32:03  (  79.63,   9.91)    0.32                55
 07/06/2018   19:08:55   (  79.16, 147.36) 07/06/2018   19:07:42  (  79.15, 147.25)    2.67                73