Define a period

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How many working days in year 1988?

Here is the detail of the calculation:

Because 1988 is a leap year, it has 366 days.

Let's remove 53 saturdays and 52 sundays. It remains 261 days.

Now, let's remove 9 public holidays that do not fall during a weekend and we obtain 252 working days in 1988.

Here is the list of these 9 public holidays:

1. Capodanno : Friday, 1 January, 1988
2. Epifania : Wednesday, 6 January, 1988
3. Lunedì di Pasqua : Monday, 4 April, 1988
4. Anniversario Liberazione : Monday, 25 April, 1988
5. Festa della Repubblica Italia : Thursday, 2 June, 1988
6. Ferragosto o Assunzione : Monday, 15 August, 1988
7. Ognissanti o Tutti i Santi : Tuesday, 1 November, 1988
8. Immacolata Concezione : Thursday, 8 December, 1988
9. Santo Stefano : Monday, 26 December, 1988

And here are the 2 public holidays falling on a weekend:

1. Festa del lavoro : Sunday, 1 May, 1988
2. Santo Natale : Sunday, 25 December, 1988