Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 7 12.  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)
 07/14/2018   19:58:16   (  79.47, 137.06) 07/14/2018   19:58:15  (  79.48, 137.18)    2.54                 1
 07/14/2018   20:45:53   ( -81.84, -15.57) 07/14/2018   20:47:06  ( -81.27, -15.42)   63.02                73
 07/17/2018   11:25:23   ( -79.28,  84.02) 07/17/2018   11:24:30  ( -79.28,  84.08)    1.41                53
 07/17/2018   12:14:43   (  79.50,-106.89) 07/17/2018   12:15:08  (  79.50,-106.92)    0.58                25
 07/20/2018   03:41:50   ( -79.34,-159.70) 07/20/2018   03:41:23  ( -79.34,-159.74)    1.15                27
 07/20/2018   04:31:08   (  79.63,   9.94) 07/20/2018   04:31:58  (  79.64,  10.08)    3.10                50
 07/22/2018   19:58:15   ( -79.48, -42.91) 07/22/2018   19:58:13  ( -79.49, -42.77)    3.01                 2
 07/22/2018   20:45:54   (  81.84, 163.07) 07/22/2018   20:47:07  (  81.29, 163.19)   60.90                73
 07/25/2018   11:25:22   (  79.24, -96.20) 07/25/2018   11:24:29  (  79.24, -96.24)    0.99                53