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How many working days in year 1903?

Here is the detail of the calculation:

Because 1903 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 8 public holidays that do not fall during a weekend and we obtain 253 working days in 1903.

Here is the list of these 8 public holidays:

1. Pesach : воскресенье, 12 апрель, 1903
2. Yom Ha-Atzmaut : четверг, 30 апрель, 1903
3. Shavuot : понедельник, 1 июнь, 1903
4. Rosh Hashanah : вторник, 22 сентябрь, 1903
5. Rosh Hashanah : среда, 23 сентябрь, 1903
6. Yom Kippur : четверг, 1 октябрь, 1903
7. Sukkot : вторник, 6 октябрь, 1903
8. Shemini Atzeret / Simchat Torah : вторник, 13 октябрь, 1903

And here is the public holiday falling on a weekend:

1. Shvi'i shel Pesach : суббота, 18 апрель, 1903