Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 3 30.  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)
 04/01/2015   15:52:01   ( -78.38,  12.61) 04/01/2015   15:50:50  ( -78.39,  12.68)    1.86                71
 04/01/2015   16:41:19   (  78.70,-178.05) 04/01/2015   16:41:26  (  78.70,-178.15)    2.35                 7
 04/04/2015   08:08:31   ( -78.40, 128.61) 04/04/2015   08:07:41  ( -78.40, 128.53)    1.94                50
 04/04/2015   08:57:44   (  78.93, -60.89) 04/04/2015   08:58:11  (  78.93, -60.87)    0.32                27
 04/07/2015   00:24:57   ( -78.59,-114.53) 04/07/2015   00:24:26  ( -78.59,-114.54)    0.23                31
 04/07/2015   01:14:10   (  79.11,  56.06) 04/07/2015   01:14:56  (  79.11,  56.17)    2.38                46
 04/09/2015   16:41:25   ( -78.78,   2.35) 04/09/2015   16:41:12  ( -78.78,   2.39)    0.98                13
 04/09/2015   17:30:44   (  79.05, 171.54) 04/09/2015   17:31:49  (  79.04, 171.43)    2.51                65
 04/12/2015   08:08:38   (  78.47, -51.07) 04/12/2015   08:07:25  (  78.48, -50.99)    1.71                73