Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 9 23.  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)
 09/24/2015   17:29:55   ( -78.78, -10.20) 09/24/2015   17:29:36  ( -78.78, -10.19)    0.23                19
 09/24/2015   18:19:13   (  79.09, 159.30) 09/24/2015   18:20:12  (  79.09, 159.22)    1.75                59
 09/27/2015   08:57:02   (  78.48, -63.54) 09/27/2015   08:55:50  (  78.48, -63.52)    0.43                72
 09/27/2015   09:46:19   ( -78.91, 106.43) 09/27/2015   09:46:24  ( -78.91, 106.45)    0.42                 5
 09/30/2015   01:13:24   (  78.68,  53.43) 09/30/2015   01:12:36  (  78.69,  53.52)    1.90                48
 09/30/2015   02:02:42   ( -79.06,-136.75) 09/30/2015   02:03:11  ( -79.07,-136.66)    2.19                29
 10/02/2015   17:29:50   (  78.71, 169.45) 10/02/2015   17:29:27  (  78.71, 169.39)    1.35                23
 10/02/2015   18:19:07   ( -79.13, -20.48) 10/02/2015   18:20:01  ( -79.12, -20.51)    0.79                54
 10/05/2015   08:58:19   ( -74.51, 102.59) 10/05/2015   08:57:05  ( -74.69, 101.60)   35.78                74
 10/05/2015   09:46:13   (  78.80, -74.14) 10/05/2015   09:46:15  (  78.79, -74.27)    3.04                 2