Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2013 8 22.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 08/22/2013   10:39:35   ( -68.39,-161.35) ( -68.41,-161.38)    2.69                60
 08/22/2013   11:30:20   (  68.30,   6.08) (  68.30,   6.13)    2.30                18
 08/22/2013   12:20:51   ( -67.64, 174.23) ( -67.69, 173.06)   49.74                70
 08/25/2013   02:56:32   ( -68.37, -45.55) ( -68.39, -45.54)    1.96                33
 08/25/2013   03:47:16   (  68.22, 121.94) (  68.22, 121.90)    1.85                43
 08/27/2013   18:22:53   (  68.69, -97.52) (  68.58, -97.06)   22.02                71
 08/27/2013   19:13:29   ( -68.29,  70.31) ( -68.31,  70.24)    3.54                 8
 08/27/2013   20:04:14   (  68.20,-122.27) (  68.20,-122.25)    1.06                70
 08/30/2013   10:39:46   (  68.40,  18.62) (  68.41,  18.59)    1.00                52
 08/30/2013   11:30:27   ( -68.28,-173.90) ( -68.25,-173.96)    3.52                18
 08/30/2013   12:20:57   (  67.38,  -5.48) (  67.40,  -7.29)   77.26                68
 09/02/2013   02:56:43   (  68.34, 134.47) (  68.36, 134.40)    3.30                27
 09/02/2013   03:47:25   ( -68.26, -58.12) ( -68.26, -58.08)    1.60                45
 09/04/2013   18:23:00   ( -68.68,  82.48) ( -68.61,  82.93)   20.18                71
 09/04/2013   19:13:40   (  68.33,-109.76) (  68.32,-109.78)    1.72                 1
 09/04/2013   20:04:21   ( -68.20,  57.73) ( -68.22,  57.74)    2.70                70