Определить период

...

How many working days in year 1999?

Here is the detail of the calculation:

Because 1999 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 7 public holidays that do not fall during a weekend and we obtain 254 working days in 1999.

Here is the list of these 7 public holidays:

1. New Year's Day : пятница, 1 январь, 1999
2. Orthodox Easter Friday : пятница, 9 апрель, 1999
3. Orthodox Easter Monday : понедельник, 12 апрель, 1999
4. Pentecost Monday : понедельник, 31 май, 1999
5. Children's Day : вторник, 1 июнь, 1999
6. St. Andrew's Day : вторник, 30 ноябрь, 1999
7. National Day : среда, 1 декабрь, 1999

And here are the 8 public holidays falling on a weekend:

1. Second Day of the New Year : суббота, 2 январь, 1999
2. Union of the Romanian Principalities : воскресенье, 24 январь, 1999
3. Orthodox Easter Sunday : воскресенье, 11 апрель, 1999
4. Labour Day : суббота, 1 май, 1999
5. Pentecost Sunday : воскресенье, 30 май, 1999
6. Assumption : воскресенье, 15 август, 1999
7. Christmas Day : суббота, 25 декабрь, 1999
8. Boxing day : воскресенье, 26 декабрь, 1999