Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 4 24.  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)
 04/25/2015   16:41:40   ( -78.42,   0.23) 04/25/2015   16:40:54  ( -78.42,   0.30)    1.86                46
 04/25/2015   17:30:57   (  78.78, 169.82) 04/25/2015   17:31:29  (  78.78, 169.78)    0.96                32
 04/28/2015   08:58:06   ( -78.53, 116.69) 04/28/2015   08:57:40  ( -78.54, 116.74)    1.13                26
 04/28/2015   09:47:24   (  78.85, -73.92) 04/28/2015   09:48:16  (  78.85, -73.99)    1.36                52
 05/01/2015   01:14:31   ( -78.67,-126.69) 05/01/2015   01:14:26  ( -78.68,-126.62)    1.59                 5
 05/01/2015   02:03:49   (  78.98,  42.72) 05/01/2015   02:05:02  (  78.98,  42.69)    0.59                73
 05/03/2015   16:41:42   (  78.18, 179.04) 05/03/2015   16:40:43  (  78.17, 178.94)    2.37                59
 05/03/2015   17:30:58   ( -78.67, -10.83) 05/03/2015   17:31:16  ( -78.66, -10.96)    2.96                18
 05/06/2015   08:58:01   (  78.45, -63.70) 05/06/2015   08:57:25  (  78.46, -63.68)    0.39                36