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How many working days in year 2086?
Here is the detail of the calculation:
Because 2086 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 2086.
 Here is the list of these 10 public holidays: 
 
 1. Новы год : Tuesday, 1 January, 2086 
2. Новы год : Wednesday, 2 January, 2086 
3. Каляды праваслаўныя : Monday, 7 January, 2086 
4. Мiжнародны жаночы дзень : Friday, 8 March, 2086 
5. Радунiца : Tuesday, 16 April, 2086 
6. Дзень працы : Wednesday, 1 May, 2086 
7. Дзень Перамогi : Thursday, 9 May, 2086 
8. Дзень Незалежнасцi : Wednesday, 3 July, 2086 
9. Дзень Кастрычніцкай рэвалюцыі : Thursday, 7 November, 2086 
10. Каляды каталiцкiя : Wednesday, 25 December, 2086