Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 4 17.  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   19:57:57   (  79.52, 137.34) 04/17/2021   19:57:45  (  79.51, 137.37)    0.67                12
 04/17/2021   20:47:18   ( -79.74, -53.36) 04/17/2021   20:48:23  ( -79.75, -53.27)    1.89                65
 04/20/2021   11:25:05   ( -79.30,  84.10) 04/20/2021   11:24:01  ( -79.30,  84.09)    0.24                64
 04/20/2021   12:14:25   (  79.52,-106.77) 04/20/2021   12:14:39  (  79.51,-106.89)    2.43                14
 04/23/2021   03:41:32   ( -79.33,-159.77) 04/23/2021   03:40:54  ( -79.33,-159.90)    2.70                38
 04/23/2021   04:30:49   (  79.66,  10.15) 04/23/2021   04:31:28  (  79.67,  10.22)    1.52                39
 04/25/2021   19:57:54   ( -79.52, -42.65) 04/25/2021   19:57:41  ( -79.52, -42.56)    1.79                13
 04/25/2021   20:47:15   (  79.69, 126.23) 04/25/2021   20:48:20  (  79.69, 126.21)    0.46                65
 04/28/2021   11:25:00   (  79.29, -95.89) 04/28/2021   11:23:56  (  79.29, -95.94)    1.02                64