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How many working days in year 2027?
Here is the detail of the calculation:
Because 2027 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 8 public holidays that do not fall during a weekend and we obtain 253 working days in 2027.
 Here is the list of these 8 public holidays: 
 
 1. New Year's Day : Friday, 1 January, 2027 
2. Good Friday : Friday, 26 March, 2027 
3. Easter Monday : Monday, 29 March, 2027 
4. Ascension Day : Thursday, 6 May, 2027 
5. Whit Monday : Monday, 17 May, 2027 
6. Corpus Christi : Thursday, 27 May, 2027 
7. Plebiscite Commemoration Day : Wednesday, 23 June, 2027 
8. All Saints' Day : Monday, 1 November, 2027 
And here are the 5 public holidays falling on a weekend:
1. Berchtold's Day : Saturday, 2 January, 2027 
2. Labour Day : Saturday, 1 May, 2027 
3. Swiss National Day : Sunday, 1 August, 2027 
4. Assumption of Mary : Sunday, 15 August, 2027 
5. Christmas Day : Saturday, 25 December, 2027