Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 9 8.  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)
 09/08/2021   18:21:47   (  71.41, 135.85) 09/08/2021   18:20:34  (  71.75, 133.80)   81.91                73
 09/08/2021   19:08:27   ( -79.48, -30.43) 09/08/2021   19:08:27  ( -79.49, -30.33)    2.08                 0
 09/11/2021   10:35:36   (  79.27, -83.60) 09/11/2021   10:34:44  (  79.27, -83.54)    1.46                52
 09/11/2021   11:24:58   ( -79.47,  85.40) 09/11/2021   11:25:24  ( -79.47,  85.28)    2.68                26
 09/14/2021   02:52:05   (  79.29,  32.43) 09/14/2021   02:51:39  (  79.28,  32.30)    2.81                26
 09/14/2021   03:41:25   ( -79.58,-158.03) 09/14/2021   03:42:16  ( -79.57,-158.05)    0.40                51
 09/16/2021   19:08:32   (  79.43, 149.20) 09/16/2021   19:08:31  (  79.43, 149.20)    0.18                 1
 09/16/2021   19:56:14   ( -81.82,  -5.75) 09/16/2021   19:57:27  ( -81.30,  -5.42)   58.55                73
 09/19/2021   10:35:42   ( -79.22,  96.08) 09/19/2021   10:34:49  ( -79.23,  96.11)    0.63                53
 09/19/2021   11:25:02   (  79.44, -94.83) 09/19/2021   11:25:27  (  79.43, -94.98)    3.09                25