Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2012 3 13.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 03/15/2012   02:55:31   ( -68.45, -45.58) ( -68.41, -45.48)    6.08                72
 03/15/2012   03:46:13   (  68.23, 122.02) (  68.25, 121.97)    3.18                 2
 03/15/2012   04:36:54   ( -68.08, -70.48) ( -68.08, -70.60)    5.20                72
 03/17/2012   19:12:24   ( -68.33,  70.35) ( -68.33,  70.30)    2.07                48
 03/17/2012   20:03:08   (  68.21,-122.19) (  68.22,-122.18)    0.87                29
 03/17/2012   20:53:32   ( -67.15,  46.42) ( -67.21,  44.30)   91.65                67
 03/20/2012   10:38:50   (  69.10,  17.77) (  69.00,  19.39)   65.50                69
 03/20/2012   11:29:19   ( -68.31,-173.86) ( -68.33,-173.80)    3.36                20
 03/20/2012   12:20:02   (  68.14,  -6.33) (  68.16,  -6.36)    2.88                55
 03/23/2012   02:55:32   (  68.39, 134.49) (  68.36, 134.49)    2.36                65
 03/23/2012   03:46:13   ( -68.24, -58.00) ( -68.26, -58.00)    2.19                 6
 03/23/2012   04:36:51   (  67.80, 109.86) (  67.86, 109.18)   29.33                72
 03/25/2012   19:12:25   (  68.31,-109.65) (  68.32,-109.67)    0.84                38
 03/25/2012   20:03:07   ( -68.22,  57.79) ( -68.21,  57.84)    2.32                34