Define a period

...

How many working days in year 1922?

Here is the detail of the calculation:

Because 1922 is not a leap year, it has 365 days.

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

Now, let's remove 6 public holidays that do not fall during a weekend and we obtain 254 working days in 1922.

Here is the list of these 6 public holidays:

1. Iseseisvuspäev : Friday, 24 February, 1922
2. Suur Reede : Friday, 14 April, 1922
3. Kevadpüha : Monday, 1 May, 1922
4. Võidupüha : Friday, 23 June, 1922
5. Esimene jõulupüha : Monday, 25 December, 1922
6. Teine jõulupüha : Tuesday, 26 December, 1922

And here are the 6 public holidays falling on a weekend:

1. Uusaasta : Sunday, 1 January, 1922
2. Ülestõusmispühad : Sunday, 16 April, 1922
3. Nelipühad : Sunday, 4 June, 1922
4. Jaanipäev : Saturday, 24 June, 1922
5. Taasiseseisvumispäev : Sunday, 20 August, 1922
6. Jõululaupäev : Sunday, 24 December, 1922