Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 9 15.  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)
 09/16/2021   19:08:32   (  79.43, 149.21) 09/16/2021   19:08:31  (  79.43, 149.21)    0.20                 1
 09/16/2021   19:56:13   ( -81.82,  -5.37) 09/16/2021   19:57:26  ( -81.29,  -5.07)   59.04                73
 09/19/2021   10:35:41   ( -79.26,  96.29) 09/19/2021   10:34:48  ( -79.26,  96.33)    0.76                53
 09/19/2021   11:25:02   (  79.44, -94.84) 09/19/2021   11:25:27  (  79.43, -94.98)    3.03                25
 09/22/2021   02:52:10   ( -79.30,-147.53) 09/22/2021   02:51:43  ( -79.30,-147.60)    1.54                27
 09/22/2021   03:41:28   (  79.60,  22.13) 09/22/2021   03:42:18  (  79.60,  22.18)    1.09                50
 09/24/2021   19:08:38   ( -79.34, -31.39) 09/24/2021   19:08:37  ( -79.33, -31.54)    3.19                 1
 09/24/2021   19:56:24   (  81.79, 171.06) 09/24/2021   19:57:37  (  81.30, 171.45)   53.97                73
 09/27/2021   10:35:44   (  79.20, -84.04) 09/27/2021   10:34:51  (  79.20, -84.07)    0.75                53