Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 9 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)
 09/19/2021   10:35:41   ( -79.26,  96.32) 09/19/2021   10:34:48  ( -79.26,  96.35)    0.59                53
 09/19/2021   11:24:59   (  79.56, -94.00) 09/19/2021   11:25:23  (  79.57, -93.85)    3.12                24
 09/22/2021   02:52:10   ( -79.27,-147.74) 09/22/2021   02:51:43  ( -79.26,-147.83)    2.01                27
 09/22/2021   03:41:27   (  79.61,  22.19) 09/22/2021   03:42:17  (  79.60,  22.23)    0.64                50
 09/24/2021   19:08:35   ( -79.47, -30.55) 09/24/2021   19:08:33  ( -79.47, -30.44)    2.38                 2
 09/24/2021   19:56:30   (  81.74, 168.65) 09/24/2021   19:57:43  (  81.29, 169.16)   50.66                73
 09/27/2021   10:35:45   (  79.18, -84.18) 09/27/2021   10:34:52  (  79.17, -84.28)    2.01                53
 09/27/2021   11:25:04   ( -79.50,  85.59) 09/27/2021   11:25:28  ( -79.51,  85.63)    0.93                24
 09/30/2021   02:52:13   (  79.25,  32.15) 09/30/2021   02:51:46  (  79.24,  32.01)    3.01                27