Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 4 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)
 04/28/2015   08:58:16   ( -78.32, 115.54) 04/28/2015   08:57:46  ( -78.31, 115.44)    2.30                30
 04/28/2015   09:47:29   (  78.85, -73.97) 04/28/2015   09:48:16  (  78.86, -73.94)    0.70                47
 05/01/2015   01:14:47   ( -78.43,-128.06) 05/01/2015   01:14:33  ( -78.42,-128.16)    2.48                14
 05/01/2015   02:04:00   (  78.96,  42.48) 05/01/2015   02:05:03  (  78.96,  42.51)    0.71                63
 05/03/2015   16:43:33   (  73.62, 164.53) 05/03/2015   16:42:20  (  73.76, 163.45)   37.45                73
 05/03/2015   17:31:17   ( -78.60, -11.32) 05/03/2015   17:31:18  ( -78.59, -11.34)    0.49                 1
 05/06/2015   08:58:33   (  78.17, -65.26) 05/06/2015   08:57:32  (  78.16, -65.33)    1.51                61
 05/06/2015   09:47:50   ( -78.62, 104.65) 05/06/2015   09:48:06  ( -78.61, 104.54)    2.54                16
 05/09/2015   01:15:05   (  78.29,  51.21) 05/09/2015   01:14:18  (  78.29,  51.15)    1.35                47