Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 4 29.  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)
 04/30/2017   19:08:36   (  79.31, 148.33) 04/30/2017   19:07:34  (  79.32, 148.46)    2.99                62
 04/30/2017   19:57:58   ( -79.50, -42.75) 04/30/2017   19:58:14  ( -79.50, -42.76)    0.16                16
 05/03/2017   11:25:01   (  79.37, -95.38) 05/03/2017   11:24:28  (  79.37, -95.34)    0.71                33
 05/03/2017   12:14:23   ( -79.57,  73.57) 05/03/2017   12:15:08  ( -79.56,  73.46)    2.45                45
 05/06/2017   03:41:25   (  79.43,  20.89) 05/06/2017   03:41:21  (  79.43,  20.84)    0.94                 4
 05/06/2017   04:30:45   ( -79.69,-169.60) 05/06/2017   04:31:58  ( -79.70,-169.50)    2.18                73
 05/08/2017   19:08:29   ( -79.29, -31.78) 05/08/2017   19:07:36  ( -79.30, -31.72)    1.39                53
 05/08/2017   19:57:49   (  79.52, 137.37) 05/08/2017   19:58:14  (  79.51, 137.29)    1.87                25
 05/11/2017   11:24:53   ( -79.37,  84.65) 05/11/2017   11:24:29  ( -79.38,  84.69)    0.91                24