Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 6 12.  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   (  79.36, 148.74) 06/12/2021   19:07:31  (  79.37, 148.87)    2.87                50
 06/12/2021   19:57:43   ( -79.56, -42.29) 06/12/2021   19:58:11  ( -79.56, -42.31)    0.31                28
 06/15/2021   11:24:48   (  79.46, -94.73) 06/15/2021   11:24:25  (  79.47, -94.59)    2.83                23
 06/15/2021   12:14:10   ( -79.65,  74.28) 06/15/2021   12:15:05  ( -79.65,  74.26)    0.45                55
 06/18/2021   02:51:57   ( -79.25,-147.87) 06/18/2021   02:50:44  ( -79.25,-147.85)    0.57                73
 06/18/2021   03:41:15   (  79.55,  21.79) 06/18/2021   03:41:19  (  79.56,  21.94)    3.20                 4
 06/20/2021   19:08:23   ( -79.34, -31.40) 06/20/2021   19:07:37  ( -79.34, -31.35)    1.08                46
 06/20/2021   19:57:44   (  79.52, 137.49) 06/20/2021   19:58:16  (  79.52, 137.37)    2.45                32
 06/23/2021   11:24:49   ( -79.47,  85.31) 06/23/2021   11:24:30  ( -79.47,  85.41)    2.06                19