Define a period

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How many working days in year 2001?

Here is the detail of the calculation:

Because 2001 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 10 public holidays that do not fall during a weekend and we obtain 251 working days in 2001.

Here is the list of these 10 public holidays:

1. New Year's Day : Monday, 1 January, 2001
2. Easter Monday : Monday, 16 April, 2001
3. Labour Day : Tuesday, 1 May, 2001
4. National Day : Wednesday, 30 May, 2001
5. Corpus Christi : Thursday, 14 June, 2001
6. Anti-Fascist Struggle Day : Friday, 22 June, 2001
7. Assumption Day : Wednesday, 15 August, 2001
8. All Saints' Day : Thursday, 1 November, 2001
9. Christmas Day : Tuesday, 25 December, 2001
10. St. Stephen's Day : Wednesday, 26 December, 2001

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

1. Epiphany : Saturday, 6 January, 2001
2. Easter : Sunday, 15 April, 2001
3. Victory and Homeland Thanksgiving Day : Sunday, 5 August, 2001
4. Remembrance Day : Sunday, 18 November, 2001