Define a period

...

How many working days in year 1998?

Here is the detail of the calculation:

Because 1998 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 11 public holidays that do not fall during a weekend and we obtain 250 working days in 1998.

Here is the list of these 11 public holidays:

1. Republic Day / New Year's Day : Thursday, 1 January, 1998
2. Epiphany : Tuesday, 6 January, 1998
3. Good Friday : Friday, 10 April, 1998
4. Easter Monday : Monday, 13 April, 1998
5. Labour Day : Friday, 1 May, 1998
6. Victory over Fascism Day : Friday, 8 May, 1998
7. Constitution Day : Tuesday, 1 September, 1998
8. Day of Our Lady of Sorrows : Tuesday, 15 September, 1998
9. Freedom and Democracy Day : Tuesday, 17 November, 1998
10. Christmas Eve : Thursday, 24 December, 1998
11. Christmas Day : Friday, 25 December, 1998

And here are the 4 public holidays falling on a weekend:

1. Saints Cyril and Methodius’ Day : Sunday, 5 July, 1998
2. Slovak National Uprising Anniversary : Saturday, 29 August, 1998
3. All Saints’ Day : Sunday, 1 November, 1998
4. St. Stephen's Day : Saturday, 26 December, 1998