Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2013 9 14.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/15/2013   10:40:02   (  68.38,  18.63) (  68.39,  18.58)    2.45                29
 09/15/2013   11:30:43   ( -68.26,-173.90) ( -68.28,-173.91)    2.61                42
 09/18/2013   02:06:19   ( -68.69, -33.33) ( -68.61, -32.92)   19.13                71
 09/18/2013   02:57:00   (  68.39, 134.38) (  68.38, 134.45)    2.93                 1
 09/18/2013   03:47:40   ( -68.21, -58.07) ( -68.22, -58.11)    1.63                70
 09/20/2013   18:23:11   ( -68.43,  82.78) ( -68.42,  82.74)    2.21                49
 09/20/2013   19:13:55   (  68.29,-109.73) (  68.30,-109.76)    1.83                28
 09/20/2013   20:04:20   ( -67.31,  58.81) ( -67.36,  56.79)   86.73                68
 09/23/2013   09:49:39   (  69.16,  30.25) (  69.05,  31.77)   61.62                69
 09/23/2013   10:40:08   ( -68.39,-161.39) ( -68.39,-161.41)    1.05                20
 09/23/2013   11:30:52   (  68.25,   6.09) (  68.27,   6.08)    2.05                57
 09/26/2013   02:06:24   (  68.48, 146.94) (  68.50, 146.97)    2.91                61
 09/26/2013   02:57:05   ( -68.35, -45.57) ( -68.35, -45.58)    0.91                 9
 09/26/2013   03:47:41   (  67.78, 122.46) (  67.83, 121.46)   42.34                71