Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 5 5.  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)
 05/06/2015   08:58:22   (  78.24, -64.91) 05/06/2015   08:57:44  (  78.23, -65.02)    2.86                38
 05/06/2015   09:47:35   ( -78.84, 105.90) 05/06/2015   09:48:13  ( -78.85, 106.02)    2.65                38
 05/09/2015   01:14:47   (  78.45,  52.01) 05/09/2015   01:14:34  (  78.44,  51.96)    1.33                13
 05/09/2015   02:04:05   ( -78.84,-138.24) 05/09/2015   02:05:09  ( -78.84,-138.33)    2.04                64
 05/11/2015   16:41:59   ( -78.09,  -1.49) 05/11/2015   16:40:54  ( -78.09,  -1.57)    1.91                65
 05/11/2015   17:31:09   (  78.72, 169.30) 05/11/2015   17:31:21  (  78.73, 169.43)    2.90                12
 05/14/2015   08:58:23   ( -78.26, 115.19) 05/14/2015   08:57:44  ( -78.26, 115.13)    1.42                39
 05/14/2015   09:47:38   (  78.71, -74.86) 05/14/2015   09:48:17  (  78.70, -74.97)    2.71                39
 05/17/2015   01:14:44   ( -78.58,-127.34) 05/17/2015   01:14:31  ( -78.58,-127.26)    1.81                13