Define a period

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How many working days in year 1984?

Here is the detail of the calculation:

Because 1984 is a leap year, it has 366 days.

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

Now, let's remove 10 public holidays that do not fall during a weekend and we obtain 251 working days in 1984.

Here is the list of these 10 public holidays:

1. Good Friday : Friday, 20 April, 1984
2. Easter Monday : Monday, 23 April, 1984
3. Labour Day : Tuesday, 1 May, 1984
4. Liberation Day : Tuesday, 8 May, 1984
5. St Cyril and Methodius' Day : Thursday, 5 July, 1984
6. Jan Hus Day : Friday, 6 July, 1984
7. St Wenceslas Day : Friday, 28 September, 1984
8. Christmas Eve : Monday, 24 December, 1984
9. Christmas Day : Tuesday, 25 December, 1984
10. St. Stephen's Day : Wednesday, 26 December, 1984

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

1. Restoration Day of the Independent Czech State : Sunday, 1 January, 1984
2. Independence Day : Sunday, 28 October, 1984
3. Freedom and Democracy Day : Saturday, 17 November, 1984