Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 1 3.  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)
 01/03/2021   19:08:28   (  79.45, 149.36) 01/03/2021   19:07:18  (  79.46, 149.48)    2.49                70
 01/03/2021   19:57:50   ( -79.65, -41.62) 01/03/2021   19:57:58  ( -79.64, -41.68)    1.33                 8
 01/06/2021   11:24:54   (  79.55, -94.11) 01/06/2021   11:24:11  (  79.55, -94.05)    1.31                43
 01/06/2021   12:14:17   ( -79.70,  74.67) 01/06/2021   12:14:52  ( -79.70,  74.55)    2.44                35
 01/09/2021   03:41:21   (  79.60,  22.12) 01/09/2021   03:41:05  (  79.60,  22.15)    0.69                16
 01/09/2021   04:30:43   ( -79.79,-168.80) 01/09/2021   04:31:45  ( -79.78,-168.94)    3.00                62
 01/11/2021   19:08:29   ( -79.39, -31.08) 01/11/2021   19:07:23  ( -79.38, -31.19)    2.39                66
 01/11/2021   19:57:47   (  79.68, 138.58) 01/11/2021   19:57:58  (  79.68, 138.61)    0.64                11
 01/14/2021   11:24:53   ( -79.50,  85.60) 01/14/2021   11:24:14  ( -79.50,  85.51)    1.92                39
 01/14/2021   12:14:11   (  79.79,-104.70) 01/14/2021   12:14:49  (  79.79,-104.65)    1.13                38