How many working days in year 2028?
Here is the detail of the calculation:
Because 2028 is a leap year, it has 366 days.
Let's remove 53 saturdays and 53 sundays. It remains 260 days.
Now, let's remove 10 public holidays that do not fall during a weekend and we obtain 250 working days in 2028.
 Here is the list of these 10 public holidays: 
 
 1. New Year's Day Observance : понедельник, 3 январь, 2028 
2. Australia Day : среда, 26 январь, 2028 
3. Labour Day : понедельник, 6 март, 2028 
4. Good Friday : пятница, 14 апрель, 2028 
5. Easter Monday : понедельник, 17 апрель, 2028 
6. Anzac Day : вторник, 25 апрель, 2028 
7. Western Australia Day : понедельник, 5 июнь, 2028 
8. King's Birthday : понедельник, 25 сентябрь, 2028 
9. Christmas Day : понедельник, 25 декабрь, 2028 
10. Boxing Day : вторник, 26 декабрь, 2028 
And here are the 2 public holidays falling on a weekend:
1. New Year's Day : суббота, 1 январь, 2028 
2. Easter Sunday : воскресенье, 16 апрель, 2028