Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 12 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)
 12/19/2021   02:51:58   (  79.55,  34.19) 12/19/2021   02:51:57  (  79.54,  34.11)    1.68                 1
 12/19/2021   03:40:02   ( -81.69,-129.62) 12/19/2021   03:41:16  ( -81.29,-129.29)   44.07                74
 12/21/2021   18:19:07   ( -79.33, -19.03) 12/21/2021   18:18:11  ( -79.32, -19.16)    2.98                56
 12/21/2021   19:08:24   (  79.67, 150.94) 12/21/2021   19:08:45  (  79.67, 150.98)    0.93                21
 12/24/2021   10:35:32   ( -79.49,  97.91) 12/24/2021   10:34:58  ( -79.49,  97.94)    0.67                34
 12/24/2021   11:24:53   (  79.67, -93.17) 12/24/2021   11:25:37  (  79.67, -93.26)    1.81                44
 12/27/2021   02:52:00   ( -79.52,-145.98) 12/27/2021   02:51:49  ( -79.52,-146.02)    0.93                11
 12/27/2021   03:41:17   (  79.84,  24.04) 12/27/2021   03:42:23  (  79.85,  24.19)    3.05                66
 12/29/2021   18:19:06   (  79.30, 160.78) 12/29/2021   18:18:01  (  79.30, 160.66)    2.58                65