Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2013 8 7.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 08/09/2013   02:56:13   ( -68.39, -45.54) ( -68.39, -45.50)    1.77                47
 08/09/2013   03:46:57   (  68.25, 121.94) (  68.23, 121.95)    3.26                29
 08/09/2013   04:37:21   ( -67.21, -69.45) ( -67.23, -71.56)   90.79                67
 08/11/2013   18:22:41   (  69.12, -98.08) (  69.00, -96.50)   64.09                69
 08/11/2013   19:13:10   ( -68.35,  70.28) ( -68.34,  70.31)    1.49                20
 08/11/2013   20:03:54   (  68.21,-122.24) (  68.22,-122.18)    2.59                57
 08/14/2013   10:39:27   (  68.44,  18.61) (  68.42,  18.65)    2.58                63
 08/14/2013   11:30:08   ( -68.30,-173.90) ( -68.32,-173.83)    3.36                 8
 08/14/2013   12:20:45   (  67.79,  -5.95) (  67.87,  -6.72)   33.68                72
 08/17/2013   02:56:25   (  68.40, 134.42) (  68.39, 134.49)    3.06                35
 08/17/2013   03:47:05   ( -68.21, -58.02) ( -68.23, -58.06)    3.31                34
 08/19/2013   18:22:47   ( -68.92,  82.18) ( -68.79,  83.22)   44.12                70
 08/19/2013   19:13:22   (  68.31,-109.70) (  68.34,-109.69)    3.26                 8
 08/19/2013   20:04:03   ( -68.17,  57.79) ( -68.19,  57.76)    2.13                62