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How many working days in year 1964?

Here is the detail of the calculation:

Because 1964 is a leap year, it has 366 days.

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

Now, let's remove 14 public holidays that do not fall during a weekend and we obtain 248 working days in 1964.

Here is the list of these 14 public holidays:

1. New Year's Day : среда, 1 январь, 1964
2. Coming of Age Day : понедельник, 13 январь, 1964
3. Foundation Day : вторник, 11 февраль, 1964
4. Vernal Equinox Day : пятница, 20 март, 1964
5. Shōwa Day : среда, 29 апрель, 1964
6. Greenery Day : понедельник, 4 май, 1964
7. Children's Day : вторник, 5 май, 1964
8. Marine Day : понедельник, 20 июль, 1964
9. Respect-for-Aged Day : понедельник, 21 сентябрь, 1964
10. Autumnal Equinox Day : среда, 23 сентябрь, 1964
11. Health and Sports Day : понедельник, 12 октябрь, 1964
12. Culture Day : вторник, 3 ноябрь, 1964
13. Labor Thanksgiving Day : понедельник, 23 ноябрь, 1964
14. Emperor's Birthday : среда, 23 декабрь, 1964

And here is the public holiday falling on a weekend:

1. Constitution Memorial Day : воскресенье, 3 май, 1964