Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 9 11.  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)
 09/11/2021   10:35:35   (  79.28, -83.55) 09/11/2021   10:34:43  (  79.28, -83.49)    1.40                52
 09/11/2021   11:24:57   ( -79.48,  85.43) 09/11/2021   11:25:23  ( -79.47,  85.31)    2.65                26
 09/14/2021   02:52:06   (  79.26,  32.22) 09/14/2021   02:51:40  (  79.26,  32.09)    2.82                26
 09/14/2021   03:41:25   ( -79.58,-158.00) 09/14/2021   03:42:16  ( -79.58,-158.02)    0.32                51
 09/16/2021   19:08:32   (  79.43, 149.23) 09/16/2021   19:08:31  (  79.43, 149.23)    0.20                 1
 09/16/2021   19:56:13   ( -81.82,  -5.30) 09/16/2021   19:57:26  ( -81.29,  -5.00)   59.14                73
 09/19/2021   10:35:41   ( -79.26,  96.33) 09/19/2021   10:34:48  ( -79.26,  96.37)    0.85                53
 09/19/2021   11:25:02   (  79.44, -94.82) 09/19/2021   11:25:27  (  79.44, -94.96)    2.87                25
 09/22/2021   02:52:09   ( -79.31,-147.50) 09/22/2021   02:51:42  ( -79.30,-147.56)    1.38                27
 09/22/2021   03:41:27   (  79.60,  22.14) 09/22/2021   03:42:17  (  79.60,  22.20)    1.30                50
 09/24/2021   19:08:38   ( -79.35, -31.37) 09/24/2021   19:08:37  ( -79.34, -31.50)    2.93                 1