Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 7 13.  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)
 07/14/2021   19:08:22   (  79.36, 148.72) 07/14/2021   19:07:58  (  79.36, 148.70)    0.39                24
 07/14/2021   19:57:42   ( -79.63, -41.77) 07/14/2021   19:58:35  ( -79.63, -41.71)    1.40                53
 07/17/2021   10:35:44   ( -78.62,  92.55) 07/17/2021   10:34:30  ( -78.67,  92.33)    7.41                74
 07/17/2021   11:24:48   (  79.49, -94.52) 07/17/2021   11:24:51  (  79.50, -94.43)    1.91                 3
 07/20/2021   02:51:56   ( -79.28,-147.67) 07/20/2021   02:51:09  ( -79.28,-147.69)    0.26                47
 07/20/2021   03:41:16   (  79.50,  21.45) 07/20/2021   03:41:47  (  79.50,  21.35)    2.11                31
 07/22/2021   19:08:21   ( -79.45, -30.70) 07/22/2021   19:08:01  ( -79.45, -30.59)    2.22                20
 07/22/2021   19:57:41   (  79.66, 138.46) 07/22/2021   19:58:39  (  79.66, 138.49)    0.64                58
 07/25/2021   10:35:30   (  79.16, -84.29) 07/25/2021   10:34:21  (  79.16, -84.39)    2.34                69