Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2013 9 27.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/28/2013   18:23:19   (  68.42, -97.21) (  68.40, -97.27)    3.30                34
 09/28/2013   19:14:00   ( -68.30,  70.27) ( -68.29,  70.24)    1.64                37
 10/01/2013   09:49:37   ( -68.81,-149.26) ( -68.72,-148.63)   27.28                72
 10/01/2013   10:40:16   (  68.40,  18.58) (  68.38,  18.60)    2.58                 4
 10/01/2013   11:30:57   ( -68.28,-173.93) ( -68.28,-173.89)    1.62                67
 10/04/2013   02:06:28   ( -68.47, -33.04) ( -68.47, -33.05)    0.38                52
 10/04/2013   02:57:12   (  68.34, 134.44) (  68.35, 134.45)    1.43                25
 10/04/2013   03:47:39   ( -67.45, -57.14) ( -67.52, -58.88)   74.45                69
 10/06/2013   17:32:57   (  69.29, -85.71) (  69.20, -83.88)   72.65                68
 10/06/2013   18:23:24   ( -68.41,  82.82) ( -68.43,  82.79)    3.17                23
 10/06/2013   19:14:08   (  68.28,-109.71) (  68.31,-109.72)    3.48                54
 10/09/2013   09:49:39   (  68.54,  31.10) (  68.53,  31.17)    2.90                63
 10/09/2013   10:40:20   ( -68.40,-161.40) ( -68.38,-161.38)    1.87                 7
 10/09/2013   11:30:57   (  67.89,   6.55) (  67.92,   5.71)   35.02                71