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How many working days in year 2111?

Here is the detail of the calculation:

Because 2111 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 5 public holidays that do not fall during a weekend and we obtain 256 working days in 2111.

Here is the list of these 5 public holidays:

1. New Year's Day : четверг, 1 январь, 2111
2. Independence Movement Day : понедельник, 2 март, 2111
3. Children's Day : вторник, 5 май, 2111
4. Hangeul Day : пятница, 9 октябрь, 2111
5. Christmas Day : пятница, 25 декабрь, 2111

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

1. Independence Movement Day : воскресенье, 1 март, 2111
2. Memorial Day : суббота, 6 июнь, 2111
3. Liberation Day : суббота, 15 август, 2111
4. National Foundation Day : суббота, 3 октябрь, 2111