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How many working days in year 1967?
Here is the detail of the calculation:
Because 1967 is not a leap year, it has 365 days.
Let's remove 52 saturdays and 53 sundays. It remains 260 days.
Now, let's remove 11 public holidays that do not fall during a weekend and we obtain 249 working days in 1967.
 Here is the list of these 11 public holidays: 
 
 1. Epifania : п'ятниця, 6 січень, 1967 
2. Lunedì di Pasqua : понеділок, 27 березень, 1967 
3. Anniversario Liberazione : вівторок, 25 квітень, 1967 
4. Festa del lavoro : понеділок, 1 травень, 1967 
5. Festa della Repubblica Italia : п'ятниця, 2 червень, 1967 
6. Ferragosto o Assunzione : вівторок, 15 серпень, 1967 
7. Ognissanti o Tutti i Santi : середа, 1 листопад, 1967 
8. Festa di Sant'Ambrogio : четвер, 7 грудень, 1967 
9. Immacolata Concezione : п'ятниця, 8 грудень, 1967 
10. Santo Natale : понеділок, 25 грудень, 1967 
11. Santo Stefano : вівторок, 26 грудень, 1967 
And here is the public holiday falling on a weekend:
1. Capodanno : неділя, 1 січень, 1967