Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 6 11.  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)
 06/12/2021   19:08:21   (  79.39, 148.90) 06/12/2021   19:07:31  (  79.39, 149.03)    2.86                50
 06/12/2021   19:57:43   ( -79.58, -42.12) 06/12/2021   19:58:11  ( -79.58, -42.13)    0.41                28
 06/15/2021   11:24:48   (  79.45, -94.82) 06/15/2021   11:24:25  (  79.45, -94.70)    2.73                23
 06/15/2021   12:14:10   ( -79.64,  74.19) 06/15/2021   12:15:05  ( -79.64,  74.16)    0.54                55
 06/18/2021   02:51:57   ( -79.24,-147.95) 06/18/2021   02:50:44  ( -79.24,-147.93)    0.34                73
 06/18/2021   03:41:15   (  79.54,  21.71) 06/18/2021   03:41:19  (  79.55,  21.85)    3.01                 4
 06/20/2021   19:08:24   ( -79.33, -31.46) 06/20/2021   19:07:38  ( -79.34, -31.43)    0.78                46
 06/20/2021   19:57:45   (  79.52, 137.42) 06/20/2021   19:58:17  (  79.51, 137.29)    2.75                32
 06/23/2021   11:24:50   ( -79.46,  85.27) 06/23/2021   11:24:31  ( -79.46,  85.35)    1.66                19