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How many working days in year 2018?

Here is the detail of the calculation:

Because 2018 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 2018.

Here is the list of these 13 public holidays:

1. New Year's Day : понедельник, 1 январь, 2018
2. Seollal / Korean New Year Holiday : четверг, 15 февраль, 2018
3. Seollal / Korean New Year Holiday : пятница, 16 февраль, 2018
4. Independence Movement Day : четверг, 1 март, 2018
5. Children's Day : понедельник, 7 май, 2018
6. Buddha's Birthday : вторник, 22 май, 2018
7. Memorial Day : среда, 6 июнь, 2018
8. Liberation Day : среда, 15 август, 2018
9. Chuseok / Midautumn Festival : понедельник, 24 сентябрь, 2018
10. Chuseok / Midautumn Festival : вторник, 25 сентябрь, 2018
11. National Foundation Day : среда, 3 октябрь, 2018
12. Hangeul Day : вторник, 9 октябрь, 2018
13. Christmas Day : вторник, 25 декабрь, 2018

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

1. Seollal / Korean New Year Holiday : суббота, 17 февраль, 2018
2. Children's Day : суббота, 5 май, 2018
3. Chuseok / Midautumn Festival : воскресенье, 23 сентябрь, 2018