Define a period

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How many working days in year 1983?

Here is the detail of the calculation:

Because 1983 is not a leap year, it has 365 days.

Let's remove 53 saturdays and 52 sundays. It remains 260 days.

Now, let's remove 9 public holidays that do not fall during a weekend and we obtain 251 working days in 1983.

Here is the list of these 9 public holidays:

1. Θεοφάνεια : Thursday, 6 January, 1983
2. Καθαρά Δευτέρα : Monday, 21 March, 1983
3. Εικοστή Πέμπτη Μαρτίου : Friday, 25 March, 1983
4. Μεγάλη Παρασκευή : Friday, 6 May, 1983
5. Δευτέρα του Πάσχα : Monday, 9 May, 1983
6. Δευτέρα Πεντηκοστής : Monday, 27 June, 1983
7. Κοίμηση της Θεοτόκου : Monday, 15 August, 1983
8. Ημέρα του Όχι : Friday, 28 October, 1983
9. Σύναξη της Θεοτόκου : Monday, 26 December, 1983

And here are the 5 public holidays falling on a weekend:

1. Πρωτοχρονιά : Saturday, 1 January, 1983
2. Εργατική Πρωτομαγιά : Sunday, 1 May, 1983
3. Ορθόδοξο Πάσχα : Sunday, 8 May, 1983
4. Πεντηκοστή : Sunday, 26 June, 1983
5. Χριστούγεννα : Sunday, 25 December, 1983