Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2013 12 11.  Predictions up to the next  14.0 days:

     Date     Time(AURA)   AURA Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/13/2013   02:03:15   ( -78.59,-139.39) ( -78.59,-139.38)    0.31                46
 12/13/2013   02:52:32   (  78.95,  30.29) (  78.95,  30.25)    1.05                32
 12/15/2013   18:19:38   ( -78.79, -22.38) ( -78.80, -22.30)    1.80                15
 12/15/2013   19:08:57   (  79.07, 146.87) (  79.07, 146.90)    0.79                63
 12/18/2013   09:46:44   (  78.50, -75.72) (  78.50, -75.72)    0.03                60
 12/18/2013   10:36:02   ( -78.88,  94.03) ( -78.89,  94.05)    0.49                17
 12/21/2013   02:03:06   (  78.69,  41.19) (  78.70,  41.28)    2.10                28
 12/21/2013   02:52:24   ( -79.07,-148.98) ( -79.08,-148.86)    2.70                49
 12/23/2013   17:30:12   ( -78.45, -11.83) ( -78.46, -11.73)    2.41                73