Excel 2007 : How to formulate automatic highlight cells if weekends or holidays?

I'm beginner for excel.
I had been referring many excel example to get what I wanted to.
But still couldn't get the formula I need.
Does anyone can help?
I need the Sheet2 to highlight the cells with condition weekends and holidays.
And highlight with different color when leave is taken in Sheet1.
Is it possible to do so?
Thanks

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Edited this time