Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 4 27.  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)
 04/28/2017   03:41:32   ( -79.47,-158.86) 04/28/2017   03:41:19  ( -79.48,-158.72)    3.05                13
 04/28/2017   04:30:53   (  79.66,  10.12) 04/28/2017   04:31:58  (  79.66,  10.08)    0.92                65
 04/30/2017   19:08:36   (  79.31, 148.31) 04/30/2017   19:07:34  (  79.32, 148.45)    3.02                62
 04/30/2017   19:57:58   ( -79.50, -42.76) 04/30/2017   19:58:14  ( -79.50, -42.76)    0.14                16
 05/03/2017   11:25:01   (  79.37, -95.40) 05/03/2017   11:24:28  (  79.37, -95.35)    1.00                33
 05/03/2017   12:14:23   ( -79.56,  73.56) 05/03/2017   12:15:08  ( -79.56,  73.46)    2.22                45
 05/06/2017   03:41:25   (  79.43,  20.85) 05/06/2017   03:41:21  (  79.43,  20.85)    0.23                 4
 05/06/2017   04:30:44   ( -79.73,-169.35) 05/06/2017   04:31:57  ( -79.74,-169.21)    2.95                73
 05/08/2017   19:08:28   ( -79.33, -31.57) 05/08/2017   19:07:35  ( -79.33, -31.43)    2.88                53
 05/08/2017   19:57:49   (  79.51, 137.32) 05/08/2017   19:58:14  (  79.51, 137.31)    0.36                25
 05/11/2017   11:24:54   ( -79.33,  84.35) 05/11/2017   11:24:31  ( -79.32,  84.21)    3.02                23