Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 7 11.  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)
 07/12/2018   03:41:51   (  79.33,  20.24) 07/12/2018   03:41:25  (  79.33,  20.21)    0.61                26
 07/12/2018   04:31:11   ( -79.61,-170.21) 07/12/2018   04:32:02  ( -79.61,-170.21)    0.19                51
 07/14/2018   19:58:16   (  79.47, 137.07) 07/14/2018   19:58:15  (  79.48, 137.19)    2.62                 1
 07/14/2018   20:45:53   ( -81.84, -15.54) 07/14/2018   20:47:06  ( -81.27, -15.40)   63.07                73
 07/17/2018   11:25:23   ( -79.28,  84.03) 07/17/2018   11:24:30  ( -79.29,  84.09)    1.56                53
 07/17/2018   12:14:43   (  79.50,-106.89) 07/17/2018   12:15:08  (  79.50,-106.91)    0.44                25
 07/20/2018   03:41:50   ( -79.34,-159.70) 07/20/2018   03:41:23  ( -79.34,-159.73)    0.85                27
 07/20/2018   04:31:10   (  79.56,   9.40) 07/20/2018   04:32:01  (  79.54,   9.26)    3.05                51
 07/22/2018   19:58:18   ( -79.36, -43.69) 07/22/2018   19:58:17  ( -79.35, -43.83)    2.92                 1