Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 7 10.  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)
 07/11/2017   19:08:24   ( -79.21, -32.27) 07/11/2017   19:07:33  ( -79.22, -32.22)    1.12                51
 07/11/2017   19:57:44   (  79.43, 136.80) 07/11/2017   19:58:11  (  79.43, 136.75)    1.11                27
 07/14/2017   11:24:50   ( -79.31,  84.21) 07/14/2017   11:24:25  ( -79.31,  84.23)    0.48                25
 07/14/2017   12:14:10   (  79.52,-106.71) 07/14/2017   12:15:03  (  79.51,-106.80)    1.79                53
 07/17/2017   02:53:43   (  74.07,  12.74) 07/17/2017   02:52:30  (  74.32,  11.17)   55.05                73
 07/17/2017   03:41:16   ( -79.39,-159.34) 07/17/2017   03:41:17  ( -79.39,-159.32)    0.38                 1
 07/19/2017   19:08:21   (  79.18, 147.54) 07/19/2017   19:07:31  (  79.18, 147.50)    0.86                50
 07/19/2017   19:57:41   ( -79.48, -42.90) 07/19/2017   19:58:08  ( -79.48, -42.86)    0.73                27
 07/22/2017   11:24:47   (  79.26, -96.08) 07/22/2017   11:24:23  (  79.26, -96.09)    0.26                24