Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2013 1 12.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 01/13/2013   03:44:58   (  69.19, 120.84) (  69.09, 123.04)   87.56                66
 01/13/2013   04:35:22   ( -68.16, -70.46) ( -68.14, -70.50)    2.12                27
 01/13/2013   05:26:06   (  68.01,  97.02) (  68.03,  97.02)    2.30                50
 01/15/2013   20:01:36   (  68.35,-122.26) (  68.33,-122.03)    9.68                71
 01/15/2013   20:52:15   ( -68.13,  45.36) ( -68.11,  45.34)    1.75                 4
 01/15/2013   21:42:59   (  67.99,-147.16) (  68.00,-147.14)    1.60                73
 01/18/2013   12:18:27   (  68.23,  -6.31) (  68.22,  -6.28)    1.74                51
 01/18/2013   13:09:08   ( -68.10, 161.16) ( -68.11, 161.23)    2.81                20
 01/18/2013   13:59:37   (  67.16, -30.38) (  67.21, -32.15)   76.85                68
 01/21/2013   04:35:18   (  68.17, 109.55) (  68.14, 109.51)    3.25                29
 01/21/2013   05:25:59   ( -68.04, -82.97) ( -68.04, -82.98)    0.25                42
 01/23/2013   20:01:33   ( -68.62,  57.44) ( -68.50,  58.18)   32.94                71
 01/23/2013   20:52:10   (  68.12,-134.60) (  68.10,-134.66)    2.66                 6
 01/23/2013   21:42:51   ( -67.98,  32.88) ( -68.00,  32.86)    2.11                65
 01/26/2013   12:18:18   ( -68.20, 173.77) ( -68.22, 173.72)    2.82                59
 01/26/2013   13:09:02   (  68.08, -18.77) (  68.10, -18.78)    2.40                18
 01/26/2013   13:59:34   ( -67.46, 149.31) ( -67.50, 148.17)   48.94                71