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How many working days in year 1905?

Here is the detail of the calculation:

Because 1905 is not a leap year, it has 365 days.

Let's remove 52 saturdays and 53 sundays. It remains 260 days.

Now, let's remove 12 public holidays that do not fall during a weekend and we obtain 248 working days in 1905.

Here is the list of these 12 public holidays:

1. Seollal / Korean New Year Holiday : пятница, 3 февраль, 1905
2. Independence Movement Day : среда, 1 март, 1905
3. Children's Day : пятница, 5 май, 1905
4. Buddha's Birthday : четверг, 11 май, 1905
5. Memorial Day : вторник, 6 июнь, 1905
6. Liberation Day : вторник, 15 август, 1905
7. Chuseok / Midautumn Festival : вторник, 12 сентябрь, 1905
8. Chuseok / Midautumn Festival : среда, 13 сентябрь, 1905
9. Chuseok / Midautumn Festival : четверг, 14 сентябрь, 1905
10. National Foundation Day : вторник, 3 октябрь, 1905
11. Hangeul Day : понедельник, 9 октябрь, 1905
12. Christmas Day : понедельник, 25 декабрь, 1905

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

1. New Year's Day : воскресенье, 1 январь, 1905
2. Seollal / Korean New Year Holiday : суббота, 4 февраль, 1905
3. Seollal / Korean New Year Holiday : воскресенье, 5 февраль, 1905