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How many working days in year 1960?

Here is the detail of the calculation:

Because 1960 is a leap year, it has 366 days.

Let's remove 52 saturdays and 52 sundays. It remains 262 days.

Now, let's remove 13 public holidays that do not fall during a weekend and we obtain 249 working days in 1960.

Here is the list of these 13 public holidays:

1. New Year's Day : пятница, 1 январь, 1960
2. Seollal / Korean New Year Holiday : среда, 27 январь, 1960
3. Seollal / Korean New Year Holiday : четверг, 28 январь, 1960
4. Seollal / Korean New Year Holiday : пятница, 29 январь, 1960
5. Independence Movement Day : вторник, 1 март, 1960
6. Buddha's Birthday : вторник, 3 май, 1960
7. Children's Day : четверг, 5 май, 1960
8. Memorial Day : понедельник, 6 июнь, 1960
9. Liberation Day : понедельник, 15 август, 1960
10. National Foundation Day : понедельник, 3 октябрь, 1960
11. Chuseok / Midautumn Festival : вторник, 4 октябрь, 1960
12. Chuseok / Midautumn Festival : среда, 5 октябрь, 1960
13. Chuseok / Midautumn Festival : четверг, 6 октябрь, 1960

And here are the 2 public holidays falling on a weekend:

1. Hangeul Day : воскресенье, 9 октябрь, 1960
2. Christmas Day : воскресенье, 25 декабрь, 1960