Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 5 14.  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)
 05/16/2017   19:08:37   (  79.24, 147.83) 05/16/2017   19:07:38  (  79.23, 147.80)    0.87                59
 05/16/2017   19:57:56   ( -79.54, -42.48) 05/16/2017   19:58:14  ( -79.54, -42.41)    1.49                18
 05/19/2017   11:25:05   (  79.28, -96.01) 05/19/2017   11:24:32  (  79.28, -96.08)    1.48                33
 05/19/2017   12:14:24   ( -79.59,  73.71) 05/19/2017   12:15:08  ( -79.59,  73.74)    0.60                44
 05/22/2017   03:41:31   (  79.40,  20.64) 05/22/2017   03:41:24  (  79.39,  20.57)    1.68                 7
 05/22/2017   04:30:51   ( -79.66,-169.85) 05/22/2017   04:32:01  ( -79.66,-169.84)    0.27                70
 05/24/2017   19:08:37   ( -79.24, -32.13) 05/24/2017   19:07:38  ( -79.25, -32.09)    1.01                59
 05/24/2017   19:57:57   (  79.47, 137.01) 05/24/2017   19:58:16  (  79.46, 136.94)    1.43                19
 05/27/2017   11:25:03   ( -79.35,  84.46) 05/27/2017   11:24:30  ( -79.36,  84.53)    1.38                33