Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 9 29.  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)
 09/30/2021   02:52:12   (  79.27,  32.28) 09/30/2021   02:51:45  (  79.26,  32.19)    2.08                27
 09/30/2021   03:41:31   ( -79.58,-157.97) 09/30/2021   03:42:21  ( -79.59,-157.92)    1.20                50
 10/02/2021   19:08:39   (  79.37, 148.79) 10/02/2021   19:08:38  (  79.36, 148.72)    1.50                 1
 10/02/2021   19:56:25   ( -81.79,  -8.22) 10/02/2021   19:57:38  ( -81.30,  -7.74)   55.20                73
 10/05/2021   10:35:47   ( -79.19,  95.88) 10/05/2021   10:34:55  ( -79.18,  95.79)    2.22                52
 10/05/2021   11:25:05   (  79.49, -94.48) 10/05/2021   11:25:30  (  79.49, -94.48)    0.07                25
 10/08/2021   02:52:12   ( -79.31,-147.45) 10/08/2021   02:51:46  ( -79.31,-147.45)    0.19                26
 10/08/2021   03:41:30   (  79.61,  22.22) 10/08/2021   03:42:21  (  79.61,  22.33)    2.54                51
 10/10/2021   18:21:51   (  71.70, 136.33) 10/10/2021   18:20:38  (  72.03, 134.34)   78.46                73
 10/10/2021   19:08:40   ( -79.35, -31.34) 10/10/2021   19:08:41  ( -79.34, -31.48)    3.00                 1
 10/13/2021   10:35:45   (  79.20, -84.02) 10/13/2021   10:34:55  (  79.20, -84.10)    1.82                50