Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2013 7 6.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 07/08/2013   02:55:43   ( -68.41, -45.53) ( -68.39, -45.48)    3.46                72
 07/08/2013   03:46:26   (  68.24, 122.00) (  68.21, 121.96)    3.37                 3
 07/08/2013   04:37:06   ( -68.04, -70.43) ( -68.05, -70.59)    6.83                72
 07/10/2013   19:12:36   ( -68.35,  70.33) ( -68.34,  70.35)    1.57                47
 07/10/2013   20:03:19   (  68.18,-122.15) (  68.21,-122.15)    3.49                29
 07/10/2013   20:53:44   ( -67.17,  46.41) ( -67.22,  44.35)   88.91                68
 07/13/2013   10:39:01   (  69.14,  17.73) (  69.04,  19.48)   70.19                68
 07/13/2013   11:29:29   ( -68.29,-173.81) ( -68.27,-173.84)    2.01                22
 07/13/2013   12:20:12   (  68.13,  -6.29) (  68.15,  -6.34)    3.13                54
 07/16/2013   02:55:41   (  68.39, 134.53) (  68.41, 134.58)    3.08                66
 07/16/2013   03:46:22   ( -68.23, -57.95) ( -68.26, -57.97)    2.92                 4
 07/16/2013   04:37:00   (  67.86, 109.83) (  67.91, 109.27)   24.19                72
 07/18/2013   19:12:33   (  68.34,-109.62) (  68.32,-109.63)    1.65                41
 07/18/2013   20:03:15   ( -68.23,  57.83) ( -68.23,  57.89)    2.64                31