Define a period

...

How many working days in year 1996?

Here is the detail of the calculation:

Because 1996 is a leap year, it has 366 days.

Let's remove 52 saturdays and 52 sundays. It remains 262 days.

Now, let's remove 11 public holidays that do not fall during a weekend and we obtain 251 working days in 1996.

Here is the list of these 11 public holidays:

1. Πρωτοχρονιά : Monday, 1 January, 1996
2. Καθαρά Δευτέρα : Monday, 26 February, 1996
3. Εικοστή Πέμπτη Μαρτίου : Monday, 25 March, 1996
4. Μεγάλη Παρασκευή : Friday, 12 April, 1996
5. Δευτέρα του Πάσχα : Monday, 15 April, 1996
6. Εργατική Πρωτομαγιά : Wednesday, 1 May, 1996
7. Δευτέρα Πεντηκοστής : Monday, 3 June, 1996
8. Κοίμηση της Θεοτόκου : Thursday, 15 August, 1996
9. Ημέρα του Όχι : Monday, 28 October, 1996
10. Χριστούγεννα : Wednesday, 25 December, 1996
11. Σύναξη της Θεοτόκου : Thursday, 26 December, 1996

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

1. Θεοφάνεια : Saturday, 6 January, 1996
2. Ορθόδοξο Πάσχα : Sunday, 14 April, 1996
3. Πεντηκοστή : Sunday, 2 June, 1996