Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2019 6 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)
 06/23/2019   19:08:29   (  79.39, 148.88) 06/23/2019   19:07:57  (  79.40, 149.01)    2.90                32
 06/23/2019   19:57:51   ( -79.55, -42.36) 06/23/2019   19:58:37  ( -79.54, -42.50)    2.96                46
 06/26/2019   11:24:55   (  79.43, -94.97) 06/26/2019   11:24:51  (  79.43, -94.92)    0.98                 4
 06/26/2019   12:14:16   ( -79.67,  74.35) 06/26/2019   12:15:29  ( -79.67,  74.41)    1.38                73
 06/29/2019   02:52:02   ( -79.25,-147.90) 06/29/2019   02:51:08  ( -79.25,-147.90)    0.13                54
 06/29/2019   03:41:21   (  79.51,  21.43) 06/29/2019   03:41:45  (  79.50,  21.40)    0.71                24
 07/01/2019   19:08:28   ( -79.33, -31.53) 07/01/2019   19:08:02  ( -79.32, -31.59)    1.44                26
 07/01/2019   19:57:47   (  79.58, 137.81) 07/01/2019   19:58:39  (  79.57, 137.72)    2.12                52
 07/04/2019   10:36:42   (  76.04, -97.89) 07/04/2019   10:35:29  (  76.22, -99.06)   36.80                73