Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 4 9.  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)
 04/09/2021   19:58:00   ( -79.53, -42.61) 04/09/2021   19:57:49  ( -79.53, -42.55)    1.18                11
 04/09/2021   20:47:21   (  79.71, 126.35) 04/09/2021   20:48:28  (  79.71, 126.31)    0.69                67
 04/12/2021   11:25:06   (  79.34, -95.60) 04/12/2021   11:24:03  (  79.35, -95.51)    2.14                63
 04/12/2021   12:14:26   ( -79.62,  73.93) 04/12/2021   12:14:40  ( -79.63,  74.07)    3.06                14
 04/15/2021   03:41:33   (  79.35,  20.35) 04/15/2021   03:40:56  (  79.35,  20.25)    1.94                37
 04/15/2021   04:30:53   ( -79.63,-170.10) 04/15/2021   04:31:33  ( -79.63,-170.14)    0.93                40
 04/17/2021   19:57:57   (  79.51, 137.31) 04/17/2021   19:57:45  (  79.51, 137.35)    0.93                12
 04/17/2021   20:47:18   ( -79.75, -53.34) 04/17/2021   20:48:23  ( -79.75, -53.24)    2.01                65
 04/20/2021   11:25:05   ( -79.30,  84.12) 04/20/2021   11:24:01  ( -79.30,  84.11)    0.13                64
 04/20/2021   12:14:25   (  79.51,-106.80) 04/20/2021   12:14:39  (  79.51,-106.91)    2.18                14