Define a period

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How many working days in year 2005?

Here is the detail of the calculation:

Because 2005 is not a leap year, it has 365 days.

Let's remove 53 saturdays and 52 sundays. It remains 260 days.

Now, let's remove 7 public holidays that do not fall during a weekend and we obtain 253 working days in 2005.

Here is the list of these 7 public holidays:

1. Easter Monday : Monday, 28 March, 2005
2. Ascension Day : Thursday, 5 May, 2005
3. Pentecost Monday : Monday, 16 May, 2005
4. National Day : Thursday, 21 July, 2005
5. Assumption of Mary : Monday, 15 August, 2005
6. All Saints' Day : Tuesday, 1 November, 2005
7. Armistice Day : Friday, 11 November, 2005

And here are the 3 public holidays falling on a weekend:

1. New Year's Day : Saturday, 1 January, 2005
2. Labor Day : Sunday, 1 May, 2005
3. Christmas Day : Sunday, 25 December, 2005