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How many working days in year 2015?

Here is the detail of the calculation:

Because 2015 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 13 public holidays that do not fall during a weekend and we obtain 248 working days in 2015.

Here is the list of these 13 public holidays:

1. New Year's Day : четверг, 1 январь, 2015
2. Coming of Age Day : понедельник, 12 январь, 2015
3. Foundation Day : среда, 11 февраль, 2015
4. Shōwa Day : среда, 29 апрель, 2015
5. Greenery Day : понедельник, 4 май, 2015
6. Children's Day : вторник, 5 май, 2015
7. Marine Day : понедельник, 20 июль, 2015
8. Respect-for-Aged Day : понедельник, 21 сентябрь, 2015
9. Autumnal Equinox Day : среда, 23 сентябрь, 2015
10. Health and Sports Day : понедельник, 12 октябрь, 2015
11. Culture Day : вторник, 3 ноябрь, 2015
12. Labor Thanksgiving Day : понедельник, 23 ноябрь, 2015
13. Emperor's Birthday : среда, 23 декабрь, 2015

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

1. Vernal Equinox Day : суббота, 21 март, 2015
2. Constitution Memorial Day : воскресенье, 3 май, 2015