Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 9 27.  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)
 09/30/2015   01:13:23   (  78.72,  53.62) 09/30/2015   01:12:42  (  78.71,  53.50)    2.68                41
 09/30/2015   02:02:40   ( -79.13,-136.34) 09/30/2015   02:03:16  ( -79.12,-136.43)    2.11                36
 10/02/2015   17:29:44   (  78.94, 170.76) 10/02/2015   17:29:30  (  78.93, 170.70)    1.56                14
 10/02/2015   18:19:02   ( -79.31, -19.35) 10/02/2015   18:20:05  ( -79.30, -19.38)    0.72                63
 10/05/2015   08:56:51   ( -78.62, 117.25) 10/05/2015   08:55:47  ( -78.62, 117.13)    2.64                64
 10/05/2015   09:46:04   (  79.14, -72.13) 10/05/2015   09:46:17  (  79.14, -72.07)    1.14                13
 10/08/2015   01:13:10   ( -78.90,-125.31) 10/08/2015   01:12:33  ( -78.91,-125.24)    1.64                37
 10/08/2015   02:02:28   (  79.21,  44.19) 10/08/2015   02:03:09  (  79.21,  44.15)    0.97                41
 10/10/2015   17:29:32   ( -79.04,  -8.60) 10/10/2015   17:29:23  ( -79.05,  -8.55)    1.23                 9