Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 4 16.  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)
 04/17/2021   19:57:58   (  79.48, 137.10) 04/17/2021   19:57:46  (  79.48, 137.12)    0.62                12
 04/17/2021   20:47:18   ( -79.75, -53.33) 04/17/2021   20:48:23  ( -79.75, -53.24)    1.81                65
 04/20/2021   11:25:05   ( -79.30,  84.13) 04/20/2021   11:24:01  ( -79.30,  84.12)    0.38                64
 04/20/2021   12:14:25   (  79.52,-106.75) 04/20/2021   12:14:39  (  79.51,-106.87)    2.55                14
 04/23/2021   03:41:32   ( -79.34,-159.74) 04/23/2021   03:40:54  ( -79.33,-159.88)    2.98                38
 04/23/2021   04:30:49   (  79.67,  10.18) 04/23/2021   04:31:28  (  79.67,  10.24)    1.27                39
 04/25/2021   19:57:55   ( -79.48, -42.87) 04/25/2021   19:57:42  ( -79.49, -42.81)    1.37                13
 04/25/2021   20:47:15   (  79.69, 126.27) 04/25/2021   20:48:20  (  79.69, 126.23)    0.83                65
 04/28/2021   11:25:01   (  79.26, -96.11) 04/28/2021   11:23:57  (  79.26, -96.19)    1.63                64