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How many working days in year 1915?
Here is the detail of the calculation:
Because 1915 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 1915.
 Here is the list of these 9 public holidays: 
 
 1. New Year's Day : п'ятниця, 1 січень, 1915 
2. Family Day : понеділок, 15 лютий, 1915 
3. Good Friday : п'ятниця, 2 квітень, 1915 
4. Victoria Day : понеділок, 24 травень, 1915 
5. Canada Day : четвер, 1 липень, 1915 
6. Saskatchewan Day : понеділок, 2 серпень, 1915 
7. Labour Day : понеділок, 6 вересень, 1915 
8. Thanksgiving : понеділок, 11 жовтень, 1915 
9. Remembrance Day : четвер, 11 листопад, 1915 
And here is the public holiday falling on a weekend:
1. Christmas : субота, 25 грудень, 1915