Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 5 1.  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)
 05/03/2015   16:41:55   (  78.08, 178.47) 05/03/2015   16:40:52  (  78.08, 178.43)    0.96                63
 05/03/2015   17:31:12   ( -78.53, -11.66) 05/03/2015   17:31:26  ( -78.53, -11.76)    2.31                14
 05/06/2015   08:58:21   (  78.27, -64.78) 05/06/2015   08:57:43  (  78.26, -64.81)    0.77                38
 05/06/2015   09:47:38   ( -78.71, 105.17) 05/06/2015   09:48:17  ( -78.71, 105.08)    2.04                39
 05/09/2015   01:14:44   (  78.55,  52.52) 05/09/2015   01:14:31  (  78.56,  52.63)    2.74                13
 05/09/2015   02:04:02   ( -78.94,-137.66) 05/09/2015   02:05:06  ( -78.95,-137.59)    1.62                64
 05/11/2015   16:41:59   ( -78.05,  -1.69) 05/11/2015   16:40:55  ( -78.05,  -1.77)    1.85                64
 05/11/2015   17:31:13   (  78.55, 168.38) 05/11/2015   17:31:27  (  78.54, 168.26)    2.94                14
 05/14/2015   08:58:18   ( -78.41, 115.94) 05/14/2015   08:57:40  ( -78.42, 116.02)    1.97                38