Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2013 3 14.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 03/15/2013   11:28:57   (  68.26,   6.09) (  68.28,   6.12)    2.59                66
 03/15/2013   12:19:38   ( -68.11, 173.59) ( -68.12, 173.56)    1.52                 4
 03/15/2013   13:10:17   (  67.72, -18.61) (  67.78, -19.19)   25.13                72
 03/18/2013   03:45:53   (  68.20, 121.93) (  68.20, 121.90)    1.06                41
 03/18/2013   04:36:35   ( -68.11, -70.64) ( -68.10, -70.59)    2.15                31
 03/20/2013   19:12:19   ( -68.96,  69.38) ( -68.84,  70.91)   62.83                69
 03/20/2013   20:02:50   (  68.15,-122.24) (  68.17,-122.27)    2.11                15
 03/20/2013   20:53:32   ( -68.05,  45.20) ( -68.07,  45.25)    2.41                57
 03/23/2013   11:29:04   ( -68.27,-173.94) ( -68.29,-173.89)    2.98                64
 03/23/2013   12:19:47   (  68.10,  -6.42) (  68.12,  -6.45)    1.88                11
 03/23/2013   13:10:23   ( -67.68, 161.42) ( -67.74, 160.74)   29.21                72
 03/26/2013   03:46:01   ( -68.23, -58.13) ( -68.23, -58.09)    1.68                38
 03/26/2013   04:36:44   (  68.06, 109.40) (  68.05, 109.35)    2.13                37