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How many working days in year 1951?
Here is the detail of the calculation:
Because 1951 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 10 public holidays that do not fall during a weekend and we obtain 251 working days in 1951.
 Here is the list of these 10 public holidays: 
 
 1. New Year's Day : понеділок, 1 січень, 1951 
2. Maundy Thursday : четвер, 22 березень, 1951 
3. Good Friday : п'ятниця, 23 березень, 1951 
4. Easter Monday : понеділок, 26 березень, 1951 
5. Labour Day : вівторок, 1 травень, 1951 
6. Ascension Day : четвер, 3 травень, 1951 
7. Whit Monday : понеділок, 14 травень, 1951 
8. Constitution Day : четвер, 17 травень, 1951 
9. Christmas Day : вівторок, 25 грудень, 1951 
10. St Stephen's Day : середа, 26 грудень, 1951 
And here are the 2 public holidays falling on a weekend:
1. Easter Sunday : неділя, 25 березень, 1951 
2. Pentecost : неділя, 13 травень, 1951