Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 6 8.  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)
 06/10/2018   03:41:54   (  79.42,  20.79) 06/10/2018   03:41:28  (  79.42,  20.84)    1.30                26
 06/10/2018   04:31:15   ( -79.65,-169.92) 06/10/2018   04:32:06  ( -79.66,-169.87)    1.11                51
 06/12/2018   19:58:20   (  79.52, 137.36) 06/12/2018   19:58:20  (  79.52, 137.41)    1.04                 0
 06/12/2018   20:45:22   ( -81.57,  -0.42) 06/12/2018   20:46:35  ( -80.83,  -1.66)   84.53                73
 06/15/2018   11:25:28   ( -79.32,  84.30) 06/15/2018   11:24:36  ( -79.33,  84.35)    1.20                52
 06/15/2018   12:14:47   (  79.58,-106.35) 06/15/2018   12:15:13  (  79.58,-106.30)    1.20                26
 06/18/2018   03:41:53   ( -79.42,-159.17) 06/18/2018   03:41:27  ( -79.43,-159.10)    1.50                26
 06/18/2018   04:31:12   (  79.67,  10.19) 06/18/2018   04:32:04  (  79.67,  10.27)    1.76                52
 06/20/2018   19:11:02   (  73.40, 127.13) 06/20/2018   19:09:49  (  73.69, 125.32)   65.68                73