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 11 public holidays that do not fall during a weekend and we obtain 250 working days in 2009.

Here is the list of these 11 public holidays:

1. Republic Day / New Year's Day : Thursday, 1 January, 2009
2. Epiphany : Tuesday, 6 January, 2009
3. Good Friday : Friday, 10 April, 2009
4. Easter Monday : Monday, 13 April, 2009
5. Labour Day : Friday, 1 May, 2009
6. Victory over Fascism Day : Friday, 8 May, 2009
7. Constitution Day : Tuesday, 1 September, 2009
8. Day of Our Lady of Sorrows : Tuesday, 15 September, 2009
9. Freedom and Democracy Day : Tuesday, 17 November, 2009
10. Christmas Eve : Thursday, 24 December, 2009
11. Christmas Day : Friday, 25 December, 2009

And here are the 4 public holidays falling on a weekend:

1. Saints Cyril and Methodius’ Day : Sunday, 5 July, 2009
2. Slovak National Uprising Anniversary : Saturday, 29 August, 2009
3. All Saints’ Day : Sunday, 1 November, 2009
4. St. Stephen's Day : Saturday, 26 December, 2009