Define a period

...

How many working days in year 1951?

Here is the detail of the calculation:

Because 1951 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 8 public holidays that do not fall during a weekend and we obtain 253 working days in 1951.

Here is the list of these 8 public holidays:

1. Capodanno : Monday, 1 January, 1951
2. Lunedì di Pasqua : Monday, 26 March, 1951
3. Anniversario Liberazione : Wednesday, 25 April, 1951
4. Festa del lavoro : Tuesday, 1 May, 1951
5. Ferragosto o Assunzione : Wednesday, 15 August, 1951
6. Ognissanti o Tutti i Santi : Thursday, 1 November, 1951
7. Santo Natale : Tuesday, 25 December, 1951
8. Santo Stefano : Wednesday, 26 December, 1951

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

1. Epifania : Saturday, 6 January, 1951
2. Festa della Repubblica Italia : Saturday, 2 June, 1951
3. Immacolata Concezione : Saturday, 8 December, 1951