Define a period

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How many working days in year 1986?

Here is the detail of the calculation:

Because 1986 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 12 public holidays that do not fall during a weekend and we obtain 249 working days in 1986.

Here is the list of these 12 public holidays:

1. Πρωτοχρονιά : Wednesday, 1 January, 1986
2. Θεοφάνεια : Monday, 6 January, 1986
3. Καθαρά Δευτέρα : Monday, 17 March, 1986
4. Εικοστή Πέμπτη Μαρτίου : Tuesday, 25 March, 1986
5. Εργατική Πρωτομαγιά : Thursday, 1 May, 1986
6. Μεγάλη Παρασκευή : Friday, 2 May, 1986
7. Δευτέρα του Πάσχα : Monday, 5 May, 1986
8. Δευτέρα Πεντηκοστής : Monday, 23 June, 1986
9. Κοίμηση της Θεοτόκου : Friday, 15 August, 1986
10. Ημέρα του Όχι : Tuesday, 28 October, 1986
11. Χριστούγεννα : Thursday, 25 December, 1986
12. Σύναξη της Θεοτόκου : Friday, 26 December, 1986

And here are the 2 public holidays falling on a weekend:

1. Ορθόδοξο Πάσχα : Sunday, 4 May, 1986
2. Πεντηκοστή : Sunday, 22 June, 1986