Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 7 6.  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)
 07/09/2017   02:53:51   ( -73.80,-167.87) 07/09/2017   02:52:38  ( -74.04,-169.55)   58.17                73
 07/09/2017   03:41:17   (  79.37,  20.49) 07/09/2017   03:41:18  (  79.37,  20.50)    0.40                 1
 07/11/2017   19:08:24   ( -79.21, -32.31) 07/11/2017   19:07:33  ( -79.21, -32.26)    1.21                51
 07/11/2017   19:57:43   (  79.46, 137.00) 07/11/2017   19:58:10  (  79.46, 136.96)    0.91                27
 07/14/2017   11:24:50   ( -79.30,  84.16) 07/14/2017   11:24:25  ( -79.30,  84.19)    0.58                25
 07/14/2017   12:14:10   (  79.51,-106.78) 07/14/2017   12:15:03  (  79.51,-106.86)    1.59                53
 07/17/2017   02:53:41   (  74.16,  12.95) 07/17/2017   02:52:28  (  74.41,  11.39)   54.15                73
 07/17/2017   03:41:16   ( -79.39,-159.38) 07/17/2017   03:41:17  ( -79.39,-159.36)    0.48                 1
 07/19/2017   19:08:21   (  79.17, 147.47) 07/19/2017   19:07:31  (  79.17, 147.44)    0.64                50