Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 6 20.  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)
 06/23/2018   11:25:26   (  79.26, -96.12) 06/23/2018   11:24:36  (  79.25, -96.24)    2.76                50
 06/23/2018   12:14:45   ( -79.58,  73.70) 06/23/2018   12:15:11  ( -79.59,  73.82)    2.66                26
 06/26/2018   03:41:51   (  79.38,  20.58) 06/26/2018   03:41:27  (  79.38,  20.52)    1.33                24
 06/26/2018   04:31:13   ( -79.59,-170.34) 06/26/2018   04:32:06  ( -79.59,-170.45)    2.32                53
 06/28/2018   19:10:18   ( -75.61, -47.46) 06/28/2018   19:09:04  ( -75.84, -48.67)   42.19                74
 06/28/2018   19:58:17   (  79.46, 137.00) 06/28/2018   19:58:19  (  79.47, 137.02)    0.62                 2
 07/01/2018   11:25:23   ( -79.33,  84.37) 07/01/2018   11:24:33  ( -79.34,  84.48)    2.66                50
 07/01/2018   12:14:42   (  79.58,-106.33) 07/01/2018   12:15:10  (  79.59,-106.20)    2.83                28
 07/04/2018   03:41:49   ( -79.37,-159.51) 07/04/2018   03:41:26  ( -79.37,-159.56)    0.99                23