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How many working days in year 2099?

Here is the detail of the calculation:

Because 2099 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 9 public holidays that do not fall during a weekend and we obtain 252 working days in 2099.

Here is the list of these 9 public holidays:

1. New Year's Day : четверг, 1 январь, 2099
2. Australia Day : понедельник, 26 январь, 2099
3. Eight Hours Day : понедельник, 9 март, 2099
4. Good Friday : пятница, 10 апрель, 2099
5. Easter Monday : понедельник, 13 апрель, 2099
6. Easter Tuesday : вторник, 14 апрель, 2099
7. King's Birthday : понедельник, 8 июнь, 2099
8. Christmas Day : пятница, 25 декабрь, 2099
9. Boxing Day Observance : понедельник, 28 декабрь, 2099

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

1. Anzac Day : суббота, 25 апрель, 2099
2. Boxing Day : суббота, 26 декабрь, 2099