Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2014 12 23.  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)
 12/23/2014   22:46:04   (  77.62,  85.48) 12/23/2014   22:45:44  (  77.62,  85.48)    0.15                20
 12/23/2014   23:35:18   ( -78.21,-104.22) 12/23/2014   23:36:15  ( -78.20,-104.27)    1.00                57
 12/26/2014   14:13:46   ( -75.68,  26.92) 12/26/2014   14:12:32  ( -75.73,  26.66)    9.50                74
 12/26/2014   15:02:27   (  77.78,-157.92) 12/26/2014   15:02:30  (  77.78,-157.98)    1.49                 3
 12/26/2014   15:47:24   ( -79.15, 100.72) 12/26/2014   15:48:36  ( -78.45,  97.97)   97.80                72
 12/29/2014   06:29:39   ( -77.25, 148.12) 12/29/2014   06:28:49  ( -77.24, 148.03)    2.56                50
 12/29/2014   07:18:45   (  78.13, -40.43) 12/29/2014   07:19:12  (  78.13, -40.41)    0.34                27
 12/31/2014   22:45:50   ( -77.84, -93.50) 12/31/2014   22:45:25  ( -77.85, -93.40)    2.45                25
 12/31/2014   23:35:05   (  78.31,  76.33) 12/31/2014   23:35:58  (  78.31,  76.31)    0.54                53
 01/03/2015   14:13:20   (  76.21,-151.37) 01/03/2015   14:12:06  (  76.27,-151.52)    7.51                74
 01/03/2015   15:02:10   ( -77.94,  22.87) 01/03/2015   15:02:13  ( -77.94,  22.83)    1.11                 3