Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 4 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)
 04/15/2021   03:41:33   (  79.38,  20.50) 04/15/2021   03:40:56  (  79.37,  20.40)    2.21                37
 04/15/2021   04:30:53   ( -79.65,-169.97) 04/15/2021   04:31:33  ( -79.64,-170.01)    1.06                40
 04/17/2021   19:57:58   (  79.50, 137.20) 04/17/2021   19:57:46  (  79.50, 137.22)    0.41                12
 04/17/2021   20:47:19   ( -79.73, -53.48) 04/17/2021   20:48:24  ( -79.74, -53.40)    1.65                65
 04/20/2021   11:25:05   ( -79.28,  84.00) 04/20/2021   11:24:01  ( -79.28,  83.96)    0.85                64
 04/20/2021   12:14:25   (  79.50,-106.90) 04/20/2021   12:14:39  (  79.49,-107.05)    3.04                14
 04/23/2021   03:41:29   ( -79.43,-159.10) 04/23/2021   03:40:50  ( -79.44,-158.99)    2.51                39
 04/23/2021   04:30:49   (  79.65,  10.03) 04/23/2021   04:31:28  (  79.65,  10.04)    0.35                39
 04/25/2021   19:57:56   ( -79.47, -42.99) 04/25/2021   19:57:43  ( -79.47, -43.00)    0.18                13