Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 4 11.  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)
 04/12/2015   08:08:26   (  78.38, -51.57) 04/12/2015   08:07:28  (  78.39, -51.51)    1.38                58
 04/12/2015   08:57:45   ( -78.75, 118.00) 04/12/2015   08:58:04  ( -78.75, 117.99)    0.42                19
 04/15/2015   00:25:05   (  78.42,  64.45) 04/15/2015   00:24:18  (  78.42,  64.46)    0.26                47
 04/15/2015   01:14:24   ( -78.79,-125.94) 04/15/2015   01:14:54  ( -78.78,-126.03)    2.25                30
 04/17/2015   16:41:47   (  78.56,-179.04) 04/17/2015   16:41:04  (  78.56,-178.91)    2.91                43
 04/17/2015   17:31:07   ( -78.89,  -9.58) 04/17/2015   17:31:41  ( -78.88,  -9.59)    0.29                34
 04/20/2015   08:58:45   (  78.32, -64.44) 04/20/2015   08:58:01  (  78.32, -64.57)    2.96                44
 04/20/2015   09:48:00   ( -78.87, 106.13) 04/20/2015   09:48:32  ( -78.87, 106.11)    0.55                32
 04/23/2015   01:15:41   (  78.45,  51.95) 04/23/2015   01:14:48  (  78.45,  52.00)    1.24                53
 04/23/2015   02:04:58   ( -78.92,-137.87) 04/23/2015   02:05:21  ( -78.93,-137.74)    3.12                23
 04/25/2015   17:32:51   (  78.21, 166.46) 04/25/2015   17:31:44  (  78.20, 166.33)    3.04                67