Define a period

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How many working days in year 2009?

Here is the detail of the calculation:

Because 2009 is not a leap year, it has 365 days.

Let's remove 52 saturdays and 52 sundays. It remains 261 days.

Now, let's remove 6 public holidays that do not fall during a weekend and we obtain 255 working days in 2009.

Here is the list of these 6 public holidays:

1. New Year's Day : Thursday, 1 January, 2009
2. National Sovereignty and Children's Day : Thursday, 23 April, 2009
3. Labour and Solidarity Day : Friday, 1 May, 2009
4. Commemoration of Atatürk, Youth and Sports Day : Tuesday, 19 May, 2009
5. Republic Day Eve : Wednesday, 28 October, 2009
6. Republic Day : Thursday, 29 October, 2009

And here is the public holiday falling on a weekend:

1. Victory Day : Sunday, 30 August, 2009