How many working days in year 2013?
Here is the detail of the calculation:
Because 2013 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 2013.
 Here is the list of these 9 public holidays: 
 
 1. New Year's Day : вторник, 1 январь, 2013 
2. St. Patrick's Day (substitute day) : понедельник, 18 март, 2013 
3. Easter Monday : понедельник, 1 апрель, 2013 
4. Early May Bank Holiday : понедельник, 6 май, 2013 
5. June Bank Holiday : понедельник, 3 июнь, 2013 
6. Summer Bank Holiday : понедельник, 5 август, 2013 
7. October Bank Holiday : понедельник, 28 октябрь, 2013 
8. Christmas Day : среда, 25 декабрь, 2013 
9. St. Stephen's Day : четверг, 26 декабрь, 2013 
And here is the public holiday falling on a weekend:
1. St. Patrick's Day : воскресенье, 17 март, 2013