Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 8 15.  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)
 08/15/2021   19:08:22   (  79.45, 149.35) 08/15/2021   19:08:16  (  79.45, 149.37)    0.58                 6
 08/15/2021   19:57:43   ( -79.68, -41.36) 08/15/2021   19:58:54  ( -79.69, -41.28)    1.58                71
 08/18/2021   10:35:30   ( -79.28,  96.47) 08/18/2021   10:34:33  ( -79.29,  96.56)    2.00                57
 08/18/2021   11:24:50   (  79.50, -94.41) 08/18/2021   11:25:11  (  79.50, -94.41)    0.27                21
 08/21/2021   02:51:56   ( -79.37,-147.06) 08/21/2021   02:51:26  ( -79.38,-146.97)    1.97                30
 08/21/2021   03:41:16   (  79.59,  22.07) 08/21/2021   03:42:04  (  79.59,  22.08)    0.24                48
 08/23/2021   19:08:23   ( -79.46, -30.60) 08/23/2021   19:08:20  ( -79.47, -30.49)    2.29                 3
 08/23/2021   19:56:48   (  81.29, 156.44) 08/23/2021   19:58:01  (  81.02, 157.25)   33.01                73
 08/26/2021   10:35:29   (  79.29, -83.47) 08/26/2021   10:34:36  (  79.29, -83.39)    1.74                53
 08/26/2021   11:24:49   ( -79.58,  86.11) 08/26/2021   11:25:13  ( -79.58,  86.25)    2.94                24
 08/29/2021   02:51:55   (  79.41,  33.18) 08/29/2021   02:51:29  (  79.41,  33.30)    2.55                26