Define a period

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How many working days in year 1952?

Here is the detail of the calculation:

Because 1952 is a leap year, it has 366 days.

Let's remove 52 saturdays and 52 sundays. It remains 262 days.

Now, let's remove 10 public holidays that do not fall during a weekend and we obtain 252 working days in 1952.

Here is the list of these 10 public holidays:

1. Restoration Day of the Independent Czech State : Tuesday, 1 January, 1952
2. Good Friday : Friday, 11 April, 1952
3. Easter Monday : Monday, 14 April, 1952
4. Labour Day : Thursday, 1 May, 1952
5. Liberation Day : Thursday, 8 May, 1952
6. Independence Day : Tuesday, 28 October, 1952
7. Freedom and Democracy Day : Monday, 17 November, 1952
8. Christmas Eve : Wednesday, 24 December, 1952
9. Christmas Day : Thursday, 25 December, 1952
10. St. Stephen's Day : Friday, 26 December, 1952

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

1. St Cyril and Methodius' Day : Saturday, 5 July, 1952
2. Jan Hus Day : Sunday, 6 July, 1952
3. St Wenceslas Day : Sunday, 28 September, 1952