Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2012 9 16.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/17/2012   20:01:43   ( -68.29,  57.81) ( -68.27,  57.85)    2.66                49
 09/17/2012   20:52:26   (  68.10,-134.64) (  68.10,-134.70)    2.40                26
 09/17/2012   21:42:52   ( -67.16,  33.81) ( -67.21,  31.92)   81.58                68
 09/20/2012   11:28:09   (  69.17,   5.08) (  69.08,   7.11)   80.95                67
 09/20/2012   12:18:35   ( -68.23, 173.65) ( -68.25, 173.72)    3.52                24
 09/20/2012   13:09:19   (  68.10, -18.88) (  68.08, -18.84)    2.73                52
 09/23/2012   03:44:47   (  68.31, 122.00) (  68.33, 122.06)    3.31                70
 09/23/2012   04:35:28   ( -68.18, -70.50) ( -68.18, -70.49)    0.47                 0
 09/23/2012   05:26:09   (  67.89,  97.16) (  67.94,  96.88)   13.26                72
 09/25/2012   20:01:40   (  68.26,-122.16) (  68.25,-122.16)    1.92                46
 09/25/2012   20:52:21   ( -68.12,  45.34) ( -68.15,  45.35)    2.77                25
 09/25/2012   21:42:47   (  67.03,-146.03) (  67.07,-148.21)   94.82                67
 09/28/2012   11:28:06   ( -69.23,-175.00) ( -69.11,-172.85)   85.92                67
 09/28/2012   12:18:33   (  68.21,  -6.32) (  68.21,  -6.32)    0.54                21
 09/28/2012   13:09:14   ( -68.07, 161.18) ( -68.05, 161.13)    2.60                49