Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2013 9 25.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/26/2013   02:06:23   (  68.49, 146.93) (  68.47, 146.93)    2.96                62
 09/26/2013   02:57:04   ( -68.37, -45.60) ( -68.36, -45.57)    2.03                 9
 09/26/2013   03:47:40   (  67.79, 122.44) (  67.85, 121.48)   40.90                71
 09/28/2013   18:23:19   (  68.42, -97.20) (  68.40, -97.26)    3.04                34
 09/28/2013   19:14:00   ( -68.29,  70.28) ( -68.30,  70.24)    1.44                37
 10/01/2013   09:49:38   ( -68.86,-149.33) ( -68.72,-148.63)   31.83                71
 10/01/2013   10:40:16   (  68.40,  18.59) (  68.38,  18.59)    2.70                 4
 10/01/2013   11:30:57   ( -68.27,-173.93) ( -68.28,-173.90)    1.30                67
 10/04/2013   02:06:28   ( -68.47, -33.03) ( -68.46, -33.06)    1.45                52
 10/04/2013   02:57:12   (  68.33, 134.45) (  68.33, 134.43)    0.59                25
 10/04/2013   03:47:39   ( -67.45, -57.13) ( -67.51, -58.89)   75.30                69
 10/06/2013   17:32:56   (  69.29, -85.70) (  69.17, -83.92)   71.59                68
 10/06/2013   18:23:23   ( -68.40,  82.83) ( -68.41,  82.76)    2.79                23
 10/06/2013   19:14:07   (  68.27,-109.70) (  68.28,-109.75)    1.93                54