Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 9 10.  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   10:35:36   (  79.25, -83.73) 09/11/2021   10:34:44  (  79.26, -83.67)    1.39                52
 09/11/2021   11:24:58   ( -79.45,  85.25) 09/11/2021   11:25:24  ( -79.45,  85.13)    2.69                26
 09/14/2021   02:52:06   (  79.27,  32.30) 09/14/2021   02:51:40  (  79.27,  32.16)    3.09                26
 09/14/2021   03:41:25   ( -79.59,-157.91) 09/14/2021   03:42:16  ( -79.59,-157.93)    0.67                51
 09/16/2021   19:08:33   (  79.41, 149.07) 09/16/2021   19:08:32  (  79.41, 149.04)    0.65                 1
 09/16/2021   19:56:19   ( -81.80,  -7.68) 09/16/2021   19:57:32  ( -81.30,  -7.23)   55.94                73
 09/19/2021   10:35:41   ( -79.24,  96.20) 09/19/2021   10:34:48  ( -79.24,  96.19)    0.46                53
 09/19/2021   11:24:59   (  79.54, -94.18) 09/19/2021   11:25:23  (  79.54, -94.07)    2.31                24
 09/22/2021   02:52:08   ( -79.37,-147.10) 09/22/2021   02:51:40  ( -79.38,-146.96)    3.09                28