Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 9 9.  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   02:51:44   ( -79.27,-147.73) 09/11/2017   02:51:18  ( -79.28,-147.63)    2.07                26
 09/11/2017   03:41:05   (  79.47,  21.21) 09/11/2017   03:41:57  (  79.46,  21.14)    1.47                52
 09/13/2017   18:19:05   (  78.43, 155.71) 09/13/2017   18:17:51  (  78.49, 155.57)    7.40                74
 09/13/2017   19:08:09   ( -79.37, -31.20) 09/13/2017   19:08:12  ( -79.38, -31.08)    2.59                 3
 09/16/2017   10:35:14   (  79.17, -84.21) 09/16/2017   10:34:29  (  79.18, -84.09)    2.68                45
 09/16/2017   11:24:35   ( -79.41,  84.98) 09/16/2017   11:25:08  ( -79.41,  84.92)    1.30                33
 09/19/2017   02:51:37   (  79.28,  32.35) 09/19/2017   02:51:22  (  79.28,  32.40)    1.02                15
 09/19/2017   03:41:00   ( -79.44,-158.94) 09/19/2017   03:42:03  ( -79.43,-159.09)    3.18                63
 09/21/2017   18:18:45   ( -78.98, -21.23) 09/21/2017   18:17:43  ( -78.98, -21.35)    2.73                62