Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 9 8.  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)
 09/11/2017   02:51:45   ( -79.25,-147.87) 09/11/2017   02:51:19  ( -79.25,-147.79)    1.54                26
 09/11/2017   03:41:06   (  79.44,  21.06) 09/11/2017   03:41:58  (  79.44,  20.96)    1.98                52
 09/13/2017   18:19:15   (  78.02, 153.73) 09/13/2017   18:18:01  (  78.11, 153.45)   11.94                74
 09/13/2017   19:08:11   ( -79.32, -31.54) 09/13/2017   19:08:14  ( -79.32, -31.50)    0.91                 3
 09/16/2017   10:35:15   (  79.13, -84.47) 09/16/2017   10:34:30  (  79.13, -84.49)    0.78                45
 09/16/2017   11:24:34   ( -79.45,  85.23) 09/16/2017   11:25:06  ( -79.45,  85.31)    1.66                32
 09/19/2017   02:51:39   (  79.26,  32.20) 09/19/2017   02:51:23  (  79.26,  32.27)    1.67                16
 09/19/2017   03:41:01   ( -79.46,-158.84) 09/19/2017   03:42:03  ( -79.45,-158.96)    2.56                62
 09/21/2017   18:18:45   ( -79.06, -20.76) 09/21/2017   18:17:41  ( -79.07, -20.70)    1.46                64