Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2019 5 21.  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, 147.90) 05/22/2019   19:07:48  (  79.23, 147.77)    2.84                53
 05/22/2019   19:58:00   ( -79.55, -42.38) 05/22/2019   19:58:24  ( -79.56, -42.36)    0.30                24
 05/25/2019   11:25:06   (  79.36, -95.48) 05/25/2019   11:24:41  (  79.36, -95.54)    1.22                25
 05/25/2019   12:14:25   ( -79.67,  74.31) 05/25/2019   12:15:17  ( -79.67,  74.39)    1.68                52
 05/28/2019   02:52:28   ( -78.55,-151.97) 05/28/2019   02:51:14  ( -78.61,-152.23)    8.62                74
 05/28/2019   03:41:29   (  79.50,  21.40) 05/28/2019   03:41:32  (  79.50,  21.43)    0.64                 3
 05/30/2019   19:08:37   ( -79.28, -31.88) 05/30/2019   19:07:51  ( -79.28, -31.93)    1.13                46
 05/30/2019   19:57:54   (  79.61, 138.02) 05/30/2019   19:58:25  (  79.62, 138.14)    2.61                31
 06/02/2019   11:25:01   ( -79.42,  84.96) 06/02/2019   11:24:43  ( -79.42,  84.99)    0.67                18