Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2013 7 1.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 07/02/2013   19:12:40   (  68.34,-109.69) (  68.35,-109.64)    2.84                46
 07/02/2013   20:03:21   ( -68.18,  57.83) ( -68.20,  57.81)    2.36                24
 07/02/2013   20:53:47   (  67.10,-133.55) (  67.18,-135.71)   93.68                67
 07/05/2013   10:39:06   ( -69.27,-162.49) ( -69.20,-160.34)   85.04                67
 07/05/2013   11:29:34   (  68.32,   6.12) (  68.30,   6.18)    3.29                20
 07/05/2013   12:20:15   ( -68.16, 173.64) ( -68.15, 173.63)    1.03                50
 07/08/2013   02:55:43   ( -68.34, -45.45) ( -68.35, -45.51)    2.68                72
 07/08/2013   03:46:27   (  68.24, 121.99) (  68.22, 121.98)    2.41                 5
 07/08/2013   04:37:07   ( -68.03, -70.42) ( -68.08, -70.56)    7.78                74
 07/10/2013   19:12:37   ( -68.33,  70.35) ( -68.32,  70.34)    1.34                45
 07/10/2013   20:03:20   (  68.17,-122.14) (  68.18,-122.18)    1.81                31
 07/13/2013   10:38:59   (  69.01,  17.90) (  68.91,  19.32)   58.06                69
 07/13/2013   11:29:29   ( -68.26,-173.78) ( -68.26,-173.84)    2.35                19
 07/13/2013   12:20:13   (  68.16,  -6.34) (  68.18,  -6.29)    3.31                59