Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 5 6.  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)
 05/08/2017   19:08:36   ( -79.26, -32.01) 05/08/2017   19:07:37  ( -79.26, -31.99)    0.27                59
 05/08/2017   19:57:54   (  79.57, 137.72) 05/08/2017   19:58:12  (  79.58, 137.86)    2.86                18
 05/11/2017   11:25:05   ( -79.28,  84.00) 05/11/2017   11:24:32  ( -79.28,  83.91)    1.97                33
 05/11/2017   12:14:23   (  79.59,-106.28) 05/11/2017   12:15:07  (  79.59,-106.24)    0.98                44
 05/14/2017   03:41:30   ( -79.45,-159.00) 05/14/2017   03:41:22  ( -79.46,-158.87)    2.86                 8
 05/14/2017   04:30:51   (  79.64,   9.96) 05/14/2017   04:32:01  (  79.64,   9.94)    0.41                70
 05/16/2017   19:08:37   (  79.22, 147.74) 05/16/2017   19:07:38  (  79.22, 147.73)    0.22                59
 05/16/2017   19:57:56   ( -79.54, -42.53) 05/16/2017   19:58:14  ( -79.54, -42.44)    1.89                18
 05/19/2017   11:25:04   (  79.30, -95.85) 05/19/2017   11:24:31  (  79.31, -95.87)    0.42                33