Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 5 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)
 05/17/2021   03:41:25   (  79.42,  20.83) 05/17/2021   03:41:01  (  79.42,  20.86)    0.68                24
 05/17/2021   04:30:47   ( -79.61,-170.16) 05/17/2021   04:31:41  ( -79.61,-170.30)    2.90                54
 05/19/2021   19:08:33   ( -79.22, -32.22) 05/19/2021   19:07:20  ( -79.22, -32.26)    0.78                73
 05/19/2021   19:57:50   (  79.56, 137.68) 05/19/2021   19:57:54  (  79.56, 137.78)    2.22                 4
 05/22/2021   11:24:58   ( -79.36,  84.56) 05/22/2021   11:24:13  ( -79.36,  84.61)    1.23                45
 05/22/2021   12:14:18   (  79.58,-106.30) 05/22/2021   12:14:51  (  79.57,-106.40)    2.18                33
 05/25/2021   03:41:24   ( -79.42,-159.18) 05/25/2021   03:41:08  ( -79.40,-159.31)    2.76                16
 05/25/2021   04:30:43   (  79.67,  10.23) 05/25/2021   04:31:44  (  79.67,  10.24)    0.39                61
 05/27/2021   19:08:30   (  79.22, 147.77) 05/27/2021   19:07:25  (  79.21, 147.64)    2.87                65