Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 5 25.  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)
 05/27/2015   16:41:33   ( -78.29,  -0.47) 05/27/2015   16:40:46  ( -78.29,  -0.48)    0.25                47
 05/27/2015   17:30:49   (  78.71, 169.29) 05/27/2015   17:31:20  (  78.70, 169.20)    2.10                31
 05/30/2015   08:57:50   ( -78.58, 116.89) 05/30/2015   08:57:33  ( -78.59, 117.00)    2.54                17
 05/30/2015   09:47:07   (  78.94, -73.49) 05/30/2015   09:48:08  (  78.94, -73.45)    0.79                61
 06/02/2015   00:24:54   (  78.24,  63.40) 06/02/2015   00:23:51  (  78.24,  63.44)    1.08                63
 06/02/2015   01:14:10   ( -78.72,-126.48) 06/02/2015   01:14:24  ( -78.73,-126.41)    1.72                14
 06/04/2015   16:41:10   (  78.48,-179.47) 06/04/2015   16:40:38  (  78.49,-179.36)    2.53                32
 06/04/2015   17:30:31   ( -78.75, -10.40) 06/04/2015   17:31:17  ( -78.75, -10.52)    2.78                46
 06/07/2015   08:10:53   ( -70.14, 106.81) 06/07/2015   08:09:40  ( -70.37, 105.25)   63.96                73
 06/07/2015   08:57:29   (  78.62, -62.84) 06/07/2015   08:57:29  (  78.62, -62.82)    0.31                 0