Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2012 12 11.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/12/2012   03:44:54   (  68.32, 121.94) (  68.29, 122.09)    6.76                71
 12/12/2012   04:35:34   ( -68.14, -70.50) ( -68.12, -70.48)    2.10                 2
 12/12/2012   05:26:17   (  67.95,  97.04) (  67.96,  96.97)    3.00                73
 12/14/2012   20:01:46   (  68.23,-122.16) (  68.22,-122.11)    2.35                48
 12/14/2012   20:52:26   ( -68.05,  45.39) ( -68.06,  45.33)    2.64                21
 12/14/2012   21:42:54   (  67.04,-146.10) (  67.10,-148.10)   87.07                67
 12/17/2012   11:28:14   ( -69.29,-175.13) ( -69.20,-172.65)   98.02                66
 12/17/2012   12:18:39   (  68.14,  -6.28) (  68.14,  -6.32)    1.69                25
 12/17/2012   13:09:20   ( -68.02, 161.20) ( -68.04, 161.19)    2.31                46
 12/20/2012   03:44:52   ( -68.41, -58.16) ( -68.34, -57.85)   15.47                72
 12/20/2012   04:35:33   (  68.12, 109.52) (  68.11, 109.52)    1.62                 0
 12/20/2012   05:26:14   ( -67.99, -83.00) ( -68.01, -82.96)    2.04                71
 12/22/2012   20:01:42   ( -68.18,  57.91) ( -68.18,  57.85)    2.43                53
 12/22/2012   20:52:26   (  68.05,-134.62) (  68.06,-134.64)    1.71                24
 12/22/2012   21:42:54   ( -67.22,  33.71) ( -67.24,  32.05)   71.58                69