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How many working days in year 2143?

Here is the detail of the calculation:

Because 2143 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 2143.

Here is the list of these 8 public holidays:

1. New Year's Day : вторник, 1 январь, 2143
2. Second Day of the New Year : среда, 2 январь, 2143
3. Synaxis of St. John the Baptist : понедельник, 7 январь, 2143
4. Union of the Romanian Principalities : четверг, 24 январь, 2143
5. Labour Day : среда, 1 май, 2143
6. Assumption : четверг, 15 август, 2143
7. Christmas Day : среда, 25 декабрь, 2143
8. Boxing day : четверг, 26 декабрь, 2143

And here are the 6 public holidays falling on a weekend:

1. Baptism of the Lord : воскресенье, 6 январь, 2143
2. Pentecost Sunday : суббота, 25 май, 2143
3. Pentecost Monday : воскресенье, 26 май, 2143
4. Children's Day : суббота, 1 июнь, 2143
5. St. Andrew's Day : суббота, 30 ноябрь, 2143
6. National Day : воскресенье, 1 декабрь, 2143