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   03:41:34   (  79.35,  20.32) 04/15/2021   03:40:57  (  79.34,  20.21)    2.30                37
 04/15/2021   04:30:54   ( -79.62,-170.14) 04/15/2021   04:31:34  ( -79.62,-170.20)    1.25                40
 04/17/2021   19:57:58   (  79.47, 137.03) 04/17/2021   19:57:46  (  79.47, 137.03)    0.29                12
 04/17/2021   20:47:18   ( -79.74, -53.38) 04/17/2021   20:48:23  ( -79.74, -53.31)    1.22                65
 04/20/2021   11:25:06   ( -79.26,  83.86) 04/20/2021   11:24:02  ( -79.26,  83.78)    1.58                64
 04/20/2021   12:14:22   (  79.63,-106.00) 04/20/2021   12:14:35  (  79.63,-105.86)    2.80                13
 04/23/2021   03:41:30   ( -79.41,-159.23) 04/23/2021   03:40:51  ( -79.42,-159.17)    1.41                39
 04/23/2021   04:30:50   (  79.63,   9.89) 04/23/2021   04:31:29  (  79.62,   9.85)    0.67                39
 04/25/2021   19:57:57   ( -79.45, -43.10) 04/25/2021   19:57:44  ( -79.45, -43.18)    1.69                13