Define a period

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How many working days in year 2004?

Here is the detail of the calculation:

Because 2004 is a leap year, it has 366 days.

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

Now, let's remove 12 public holidays that do not fall during a weekend and we obtain 250 working days in 2004.

Here is the list of these 12 public holidays:

1. Нова година : Thursday, 1 January, 2004
2. Национален ден : Wednesday, 3 March, 2004
3. Православни Велики петък : Friday, 9 April, 2004
4. Православни Велики понеделник : Monday, 12 April, 2004
5. Ден на труда (наблюдаван) : Monday, 3 May, 2004
6. Гергьовден : Thursday, 6 May, 2004
7. Ден на културата и славянската писменост : Monday, 24 May, 2004
8. Ден на съединението : Monday, 6 September, 2004
9. Ден на независимостта : Wednesday, 22 September, 2004
10. Бъдни вечер : Friday, 24 December, 2004
11. Коледа (наблюдаван) : Monday, 27 December, 2004
12. Коледа (наблюдаван) : Tuesday, 28 December, 2004

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

1. Православна Велика събота : Saturday, 10 April, 2004
2. Православен Великден : Sunday, 11 April, 2004
3. Ден на труда : Saturday, 1 May, 2004
4. Коледа : Saturday, 25 December, 2004
5. Втори ден на Коледа : Sunday, 26 December, 2004