Define a period

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How many working days in year 1927?

Here is the detail of the calculation:

Because 1927 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 5 public holidays that do not fall during a weekend and we obtain 255 working days in 1927.

Here is the list of these 5 public holidays:

1. Independence Day : Thursday, 24 February, 1927
2. Good Friday : Friday, 15 April, 1927
3. Victory Day : Thursday, 23 June, 1927
4. Midsummer Day : Friday, 24 June, 1927
5. Second Day of Christmas : Monday, 26 December, 1927

And here are the 7 public holidays falling on a weekend:

1. New Year's Day : Saturday, 1 January, 1927
2. Easter : Sunday, 17 April, 1927
3. Spring Day : Sunday, 1 May, 1927
4. Pentecost : Sunday, 5 June, 1927
5. Independence Restoration Day : Saturday, 20 August, 1927
6. Christmas Eve : Saturday, 24 December, 1927
7. Christmas Day : Sunday, 25 December, 1927