Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2019 5 20.  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)
 05/22/2019   19:08:41   (  79.24, 147.89) 05/22/2019   19:07:48  (  79.23, 147.77)    2.78                53
 05/22/2019   19:58:00   ( -79.55, -42.37) 05/22/2019   19:58:24  ( -79.56, -42.36)    0.35                24
 05/25/2019   11:25:05   (  79.39, -95.24) 05/25/2019   11:24:40  (  79.39, -95.28)    0.96                25
 05/25/2019   12:14:25   ( -79.66,  74.30) 05/25/2019   12:15:17  ( -79.67,  74.39)    1.92                52
 05/28/2019   02:52:25   ( -78.68,-151.31) 05/28/2019   02:51:11  ( -78.72,-151.52)    7.07                74
 05/28/2019   03:41:29   (  79.50,  21.38) 05/28/2019   03:41:32  (  79.50,  21.43)    1.22                 3
 05/30/2019   19:08:36   ( -79.31, -31.65) 05/30/2019   19:07:50  ( -79.31, -31.66)    0.09                46
 05/30/2019   19:57:56   (  79.53, 137.45) 05/30/2019   19:58:28  (  79.52, 137.32)    2.75                32
 06/02/2019   11:25:00   ( -79.45,  85.18) 06/02/2019   11:24:42  ( -79.46,  85.29)    2.32                18