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How many working days in year 1904?

Here is the detail of the calculation:

Because 1904 is a leap year, it has 366 days.

Let's remove 53 saturdays and 52 sundays. It remains 261 days.

Now, let's remove 7 public holidays that do not fall during a weekend and we obtain 254 working days in 1904.

Here is the list of these 7 public holidays:

1. New Year's Day : пятница, 1 январь, 1904
2. Good Friday : пятница, 1 апрель, 1904
3. Easter Monday : понедельник, 4 апрель, 1904
4. Labour Day : понедельник, 2 май, 1904
5. Establishment Day : пятница, 1 июль, 1904
6. Christmas Day : понедельник, 26 декабрь, 1904
7. Boxing Day : вторник, 27 декабрь, 1904

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

1. Holy Saturday : суббота, 2 апрель, 1904
2. Labour Day : воскресенье, 1 май, 1904
3. National Day : суббота, 1 октябрь, 1904
4. Christmas Day : воскресенье, 25 декабрь, 1904