Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2013 5 13.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 05/13/2013   04:37:06   (  67.63, 109.91) (  67.72, 109.04)   38.00                71
 05/15/2013   19:12:44   (  68.27,-109.75) (  68.27,-109.70)    2.36                33
 05/15/2013   20:03:24   ( -68.10,  57.78) ( -68.10,  57.74)    1.76                36
 05/18/2013   10:39:00   ( -68.64,-161.77) ( -68.52,-161.14)   28.86                72
 05/18/2013   11:29:38   (  68.18,   6.15) (  68.18,   6.10)    2.17                 5
 05/18/2013   12:20:19   ( -68.06, 173.62) ( -68.08, 173.61)    2.03                66
 05/21/2013   02:55:48   ( -68.28, -45.52) ( -68.25, -45.56)    3.31                52
 05/21/2013   03:46:32   (  68.14, 121.97) (  68.13, 121.94)    1.74                25
 05/21/2013   04:36:59   ( -67.26, -69.64) ( -67.30, -71.37)   74.73                69
 05/23/2013   18:22:15   (  69.07, -98.11) (  68.96, -96.43)   68.21                68
 05/23/2013   19:12:43   ( -68.24,  70.31) ( -68.24,  70.33)    0.95                21
 05/23/2013   20:03:27   (  68.10,-122.21) (  68.12,-122.18)    1.87                56
 05/26/2013   10:38:56   (  68.29,  18.70) (  68.31,  18.68)    2.83                62
 05/26/2013   11:29:37   ( -68.16,-173.81) ( -68.16,-173.87)    2.52                 8
 05/26/2013   12:20:13   (  67.59,  -5.80) (  67.69,  -6.77)   42.41                71