Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 5 17.  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)
 05/19/2018   19:58:26   ( -79.52, -42.61) 05/19/2018   19:58:21  ( -79.53, -42.54)    1.57                 5
 05/19/2018   20:47:47   (  79.71, 126.38) 05/19/2018   20:49:00  (  79.70, 126.30)    1.87                73
 05/22/2018   11:25:33   (  79.30, -95.88) 05/22/2018   11:24:38  (  79.29, -96.00)    2.64                55
 05/22/2018   12:14:53   ( -79.57,  73.61) 05/22/2018   12:15:15  ( -79.57,  73.59)    0.36                22
 05/25/2018   03:41:57   (  79.45,  21.04) 05/25/2018   03:41:28  (  79.46,  21.16)    2.79                29
 05/25/2018   04:31:19   ( -79.65,-169.94) 05/25/2018   04:32:08  ( -79.64,-170.02)    1.77                49
 05/27/2018   19:58:22   (  79.53, 137.42) 05/27/2018   19:58:20  (  79.54, 137.52)    2.25                 2
 05/27/2018   20:46:42   ( -81.46, -32.87) 05/27/2018   20:47:56  ( -81.13, -32.32)   37.60                74
 05/30/2018   11:25:30   ( -79.30,  84.16) 05/30/2018   11:24:38  ( -79.29,  84.05)    2.67                52