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How many working days in year 2009?

Here is the detail of the calculation:

Because 2009 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 14 public holidays that do not fall during a weekend and we obtain 247 working days in 2009.

Here is the list of these 14 public holidays:

1. New Year's Day : четверг, 1 январь, 2009
2. Coming of Age Day : понедельник, 12 январь, 2009
3. Foundation Day : среда, 11 февраль, 2009
4. Vernal Equinox Day : пятница, 20 март, 2009
5. Shōwa Day : среда, 29 апрель, 2009
6. Greenery Day : понедельник, 4 май, 2009
7. Children's Day : вторник, 5 май, 2009
8. Marine Day : понедельник, 20 июль, 2009
9. Respect-for-Aged Day : понедельник, 21 сентябрь, 2009
10. Autumnal Equinox Day : среда, 23 сентябрь, 2009
11. Health and Sports Day : понедельник, 12 октябрь, 2009
12. Culture Day : вторник, 3 ноябрь, 2009
13. Labor Thanksgiving Day : понедельник, 23 ноябрь, 2009
14. Emperor's Birthday : среда, 23 декабрь, 2009

And here is the public holiday falling on a weekend:

1. Constitution Memorial Day : воскресенье, 3 май, 2009