Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 8 18.  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)
 08/18/2021   10:35:29   ( -79.29,  96.54) 08/18/2021   10:34:32  ( -79.30,  96.63)    2.05                57
 08/18/2021   11:24:49   (  79.52, -94.32) 08/18/2021   11:25:10  (  79.52, -94.31)    0.20                21
 08/21/2021   02:51:56   ( -79.38,-146.99) 08/21/2021   02:51:26  ( -79.39,-146.88)    2.18                30
 08/21/2021   03:41:16   (  79.60,  22.17) 08/21/2021   03:42:04  (  79.60,  22.19)    0.39                48
 08/23/2021   19:08:23   ( -79.47, -30.52) 08/23/2021   19:08:20  ( -79.48, -30.40)    2.78                 3
 08/23/2021   19:56:46   (  81.34, 157.34) 08/23/2021   19:57:59  (  81.06, 158.15)   34.39                73
 08/26/2021   10:35:28   (  79.30, -83.39) 08/26/2021   10:34:35  (  79.31, -83.26)    2.64                53
 08/26/2021   11:24:51   ( -79.47,  85.40) 08/26/2021   11:25:16  ( -79.47,  85.28)    2.53                25
 08/29/2021   02:51:57   (  79.30,  32.49) 08/29/2021   02:51:32  (  79.30,  32.39)    2.37                25
 08/29/2021   03:41:17   ( -79.59,-157.92) 08/29/2021   03:42:09  ( -79.58,-157.97)    1.01                52
 08/31/2021   18:20:14   ( -76.04, -33.76) 08/31/2021   18:19:00  ( -76.24, -34.82)   36.05                74