Define a period

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How many working days in year 2016?

Here is the detail of the calculation:

Because 2016 is a leap year, it has 366 days.

Let's remove 53 saturdays and 52 sundays. It remains 261 days.

Now, let's remove 11 public holidays that do not fall during a weekend and we obtain 250 working days in 2016.

Here is the list of these 11 public holidays:

1. Нова година : Friday, 1 January, 2016
2. Национален ден : Thursday, 3 March, 2016
3. Православни Велики петък : Friday, 29 April, 2016
4. Православни Велики понеделник : Monday, 2 May, 2016
5. Гергьовден : Friday, 6 May, 2016
6. Ден на културата и славянската писменост : Tuesday, 24 May, 2016
7. Ден на съединението : Tuesday, 6 September, 2016
8. Ден на независимостта : Thursday, 22 September, 2016
9. Втори ден на Коледа : Monday, 26 December, 2016
10. Коледа (наблюдаван) : Tuesday, 27 December, 2016
11. Коледа (наблюдаван) : Wednesday, 28 December, 2016

And here are the 4 public holidays falling on a weekend:

1. Православна Велика събота : Saturday, 30 April, 2016
2. Православен Великден : Sunday, 1 May, 2016
3. Бъдни вечер : Saturday, 24 December, 2016
4. Коледа : Sunday, 25 December, 2016