Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 4 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)
 05/01/2015   01:14:45   ( -78.38,-128.30) 05/01/2015   01:14:34  ( -78.37,-128.42)    2.81                11
 05/01/2015   02:03:58   (  78.91,  42.19) 05/01/2015   02:05:04  (  78.92,  42.25)    1.48                66
 05/03/2015   16:41:53   (  78.18, 178.93) 05/03/2015   16:40:43  (  78.19, 179.04)    2.85                70
 05/03/2015   17:31:10   ( -78.63, -11.17) 05/03/2015   17:31:17  ( -78.63, -11.10)    1.42                 7
 05/06/2015   08:58:24   (  78.14, -65.40) 05/06/2015   08:57:34  (  78.13, -65.47)    1.83                50
 05/06/2015   09:47:36   ( -78.80, 105.63) 05/06/2015   09:48:02  ( -78.81, 105.77)    3.05                26
 05/09/2015   01:14:50   (  78.24,  50.97) 05/09/2015   01:14:20  (  78.23,  50.85)    2.97                30
 05/09/2015   02:04:03   ( -78.86,-138.17) 05/09/2015   02:04:49  ( -78.86,-138.08)    2.05                46
 05/11/2015   17:31:13   (  78.48, 168.06) 05/11/2015   17:31:03  (  78.48, 168.04)    0.57                10