Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 9 16.  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   (  79.42, 149.16) 09/16/2021   19:08:31  (  79.42, 149.15)    0.17                 1
 09/16/2021   19:56:13   ( -81.82,  -5.47) 09/16/2021   19:57:26  ( -81.29,  -5.16)   58.89                73
 09/19/2021   10:35:41   ( -79.25,  96.24) 09/19/2021   10:34:48  ( -79.25,  96.27)    0.59                53
 09/19/2021   11:24:59   (  79.55, -94.10) 09/19/2021   11:25:23  (  79.56, -93.95)    3.20                24
 09/22/2021   02:52:10   ( -79.30,-147.57) 09/22/2021   02:51:43  ( -79.29,-147.66)    1.90                27
 09/22/2021   03:41:28   (  79.59,  22.09) 09/22/2021   03:42:18  (  79.59,  22.13)    0.69                50
 09/24/2021   19:08:36   ( -79.45, -30.65) 09/24/2021   19:08:34  ( -79.46, -30.53)    2.55                 2
 09/24/2021   19:56:30   (  81.75, 168.90) 09/24/2021   19:57:43  (  81.30, 169.40)   51.01                73
 09/27/2021   10:35:44   (  79.20, -84.05) 09/27/2021   10:34:51  (  79.20, -84.13)    1.77                53