Define a period

...

How many working days in year 1982?

Here is the detail of the calculation:

Because 1982 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 8 public holidays that do not fall during a weekend and we obtain 253 working days in 1982.

Here is the list of these 8 public holidays:

1. New Year's Day : Friday, 1 January, 1982
2. Epiphany : Wednesday, 6 January, 1982
3. Clean Monday : Monday, 1 March, 1982
4. Independence Day : Thursday, 25 March, 1982
5. Good Friday : Friday, 16 April, 1982
6. Easter Monday : Monday, 19 April, 1982
7. Pentecost Monday : Monday, 7 June, 1982
8. Ochi Day : Thursday, 28 October, 1982

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

1. Orthodox Easter : Sunday, 18 April, 1982
2. Labour Day : Saturday, 1 May, 1982
3. Pentecost : Sunday, 6 June, 1982
4. Assumption : Sunday, 15 August, 1982
5. Christmas : Saturday, 25 December, 1982
6. Glorifying Mother of God : Sunday, 26 December, 1982