Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2013 7 23.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 07/24/2013   02:55:50   ( -68.39, -45.49) ( -68.37, -45.47)    2.11                60
 07/24/2013   03:46:34   (  68.26, 121.98) (  68.26, 122.05)    2.63                17
 07/24/2013   04:37:06   ( -67.64, -69.91) ( -67.71, -70.96)   45.14                71
 07/26/2013   19:12:48   ( -68.32,  70.36) ( -68.34,  70.37)    2.27                34
 07/26/2013   20:03:32   (  68.20,-122.17) (  68.18,-122.19)    2.74                42
 07/29/2013   10:39:09   (  68.68,  18.34) (  68.58,  18.89)   25.04                71
 07/29/2013   11:29:46   ( -68.32,-173.87) ( -68.31,-173.80)    2.92                 7
 07/29/2013   12:20:29   (  68.14,  -6.34) (  68.14,  -6.36)    1.05                68
 08/01/2013   02:56:02   (  68.36, 134.52) (  68.37, 134.50)    1.58                53
 08/01/2013   03:46:44   ( -68.26, -58.04) ( -68.27, -57.98)    2.49                19
 08/01/2013   04:37:14   (  67.38, 110.36) (  67.42, 108.69)   71.53                69
 08/03/2013   19:13:00   (  68.31,-109.65) (  68.32,-109.69)    2.11                27
 08/03/2013   20:03:42   ( -68.21,  57.79) ( -68.22,  57.83)    2.20                45