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How many working days in year 2123?

Here is the detail of the calculation:

Because 2123 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 3 public holidays that do not fall during a weekend and we obtain 258 working days in 2123.

Here is the list of these 3 public holidays:

1. New Year's Day : пятница, 1 январь, 2123
2. Independence Movement Day : понедельник, 1 март, 2123
3. Children's Day : среда, 5 май, 2123

And here are the 5 public holidays falling on a weekend:

1. Memorial Day : воскресенье, 6 июнь, 2123
2. Liberation Day : воскресенье, 15 август, 2123
3. National Foundation Day : воскресенье, 3 октябрь, 2123
4. Hangeul Day : суббота, 9 октябрь, 2123
5. Christmas Day : суббота, 25 декабрь, 2123