Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2012 9 8.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/09/2012   20:01:47   (  68.24,-122.14) (  68.25,-122.17)    1.81                47
 09/09/2012   20:52:28   ( -68.12,  45.33) ( -68.15,  45.34)    3.50                24
 09/09/2012   21:42:55   (  67.06,-146.08) (  67.07,-148.23)   93.03                67
 09/12/2012   11:28:14   ( -69.31,-175.11) ( -69.20,-172.76)   93.68                66
 09/12/2012   12:18:40   (  68.22,  -6.34) (  68.19,  -6.36)    3.00                23
 09/12/2012   13:09:21   ( -68.09, 161.14) ( -68.09, 161.15)    0.40                48
 09/15/2012   03:44:50   ( -68.45, -58.17) ( -68.40, -57.88)   12.98                71
 09/15/2012   04:35:31   (  68.16, 109.51) (  68.16, 109.49)    1.30                 1
 09/15/2012   05:26:12   ( -68.03, -83.00) ( -68.01, -83.06)    3.10                71
 09/17/2012   20:01:39   ( -68.24,  57.88) ( -68.24,  57.81)    2.71                52
 09/17/2012   20:52:23   (  68.11,-134.66) (  68.11,-134.69)    1.45                25
 09/17/2012   21:42:50   ( -67.22,  33.74) ( -67.29,  32.01)   75.05                69
 09/20/2012   11:28:07   (  69.26,   4.97) (  69.15,   7.20)   88.96                66
 09/20/2012   12:18:31   ( -68.21, 173.70) ( -68.22, 173.68)    1.37                27
 09/20/2012   13:09:15   (  68.09, -18.84) (  68.09, -18.83)    0.88                50