R help - Nov 2010 - timeSequence

Hello,
I have time series data whose days are not consecutive. I used timeSequence
(from = "4/1/2010", to = "31/12/2010", format = "% Y-%
m-% d", FinCenter "GMT") to generate a vector of consecutive days
, however I need not
consider Sunday as well join this vector to a data frame containing
incomplete dates, for example

Days    X1    X2
day 1   10     20
day 2    30    50
day 4    40     45
day 5    45     35
day 6    20     10

Then the above I add the day 3, so I look like this:

Days    X1    X2
day 1   10     20
day 2    30    50
day 3    NA   NA
day 4    40     45
day 5    45     35
day 6    20     10

Thanks

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