Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 6 20.  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)
 06/20/2021   19:08:24   ( -79.31, -31.63) 06/20/2021   19:07:41  ( -79.30, -31.70)    1.69                43
 06/20/2021   19:57:42   (  79.61, 138.10) 06/20/2021   19:58:16  (  79.61, 138.15)    1.07                34
 06/23/2021   11:24:51   ( -79.39,  84.82) 06/23/2021   11:24:36  ( -79.39,  84.73)    2.04                15
 06/23/2021   12:14:09   (  79.69,-105.44) 06/23/2021   12:15:11  (  79.69,-105.39)    1.00                62
 06/26/2021   02:51:56   (  79.27,  32.28) 06/26/2021   02:50:51  (  79.28,  32.36)    1.77                65
 06/26/2021   03:41:18   ( -79.47,-158.75) 06/26/2021   03:41:31  ( -79.47,-158.84)    1.96                13
 06/28/2021   19:08:21   (  79.39, 148.92) 06/28/2021   19:07:44  (  79.40, 149.03)    2.46                37
 06/28/2021   19:57:43   ( -79.59, -42.07) 06/28/2021   19:58:24  ( -79.58, -42.13)    1.44                41
 07/01/2021   11:24:50   (  79.38, -95.23) 07/01/2021   11:24:42  (  79.38, -95.36)    2.82                 8
 07/01/2021   12:14:10   ( -79.66,  74.34) 07/01/2021   12:15:19  ( -79.66,  74.31)    0.47                69
 07/04/2021   02:51:55   ( -79.31,-147.47) 07/04/2021   02:50:57  ( -79.31,-147.40)    1.43                58