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How many working days in year 1955?
Here is the detail of the calculation:
Because 1955 is not a leap year, it has 365 days.
Let's remove 53 saturdays and 52 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 1955.
 Here is the list of these 10 public holidays: 
 
 1. New Year's Day Observance : понеділок, 3 січень, 1955 
2. Australia Day : середа, 26 січень, 1955 
3. Canberra Day : понеділок, 14 березень, 1955 
4. Good Friday : п'ятниця, 8 квітень, 1955 
5. Easter Monday : понеділок, 11 квітень, 1955 
6. Anzac Day : понеділок, 25 квітень, 1955 
7. King's Birthday : понеділок, 13 червень, 1955 
8. Labour Day : понеділок, 3 жовтень, 1955 
9. Christmas Day Observance : понеділок, 26 грудень, 1955 
10. Boxing Day Observance : вівторок, 27 грудень, 1955 
And here are the 4 public holidays falling on a weekend:
1. New Year's Day : субота, 1 січень, 1955 
2. Easter Saturday : субота, 9 квітень, 1955 
3. Easter Sunday : неділя, 10 квітень, 1955 
4. Christmas Day : неділя, 25 грудень, 1955