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How many working days in year 2016?
Here is the detail of the calculation:
Because 2016 is a leap year, it has 366 days.
Let's remove 53 saturdays and 52 sundays. It remains 261 days.
Now, let's remove 15 public holidays that do not fall during a weekend and we obtain 246 working days in 2016.
 Here is the list of these 15 public holidays: 
 
 1. New Year's Day : п'ятниця, 1 січень, 2016 
2. Coming of Age Day : понеділок, 11 січень, 2016 
3. Foundation Day : четвер, 11 лютий, 2016 
4. Shōwa Day : п'ятниця, 29 квітень, 2016 
5. Constitution Memorial Day : вівторок, 3 травень, 2016 
6. Greenery Day : середа, 4 травень, 2016 
7. Children's Day : четвер, 5 травень, 2016 
8. Marine Day : понеділок, 18 липень, 2016 
9. Mountain Day : четвер, 11 серпень, 2016 
10. Respect-for-Aged Day : понеділок, 19 вересень, 2016 
11. Autumnal Equinox Day : четвер, 22 вересень, 2016 
12. Health and Sports Day : понеділок, 10 жовтень, 2016 
13. Culture Day : четвер, 3 листопад, 2016 
14. Labor Thanksgiving Day : середа, 23 листопад, 2016 
15. Emperor's Birthday : п'ятниця, 23 грудень, 2016 
And here is the public holiday falling on a weekend:
1. Vernal Equinox Day : неділя, 20 березень, 2016