Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 5 15.  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)
 05/17/2015   01:14:42   ( -78.51,-127.67) 05/17/2015   01:14:32  ( -78.52,-127.64)    0.78                10
 05/17/2015   02:03:58   (  78.92,  42.18) 05/17/2015   02:05:06  (  78.91,  42.17)    0.31                68
 05/19/2015   16:41:45   (  78.30, 179.50) 05/19/2015   16:40:47  (  78.30, 179.60)    2.16                58
 05/19/2015   17:31:02   ( -78.74, -10.58) 05/19/2015   17:31:21  ( -78.74, -10.50)    1.71                19
 05/22/2015   08:58:09   (  78.30, -64.59) 05/22/2015   08:57:42  (  78.29, -64.70)    2.69                27
 05/22/2015   09:47:26   ( -78.74, 105.34) 05/22/2015   09:48:16  ( -78.73, 105.22)    2.92                50
 05/25/2015   00:25:10   ( -78.10,-117.29) 05/25/2015   00:23:56  ( -78.10,-117.27)    0.61                74
 05/25/2015   01:14:24   (  78.59,  52.79) 05/25/2015   01:14:28  (  78.59,  52.77)    0.69                 4
 05/27/2015   16:41:29   ( -78.21,  -0.85) 05/27/2015   16:40:48  ( -78.20,  -0.98)    3.00                41