定义一个时期

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How many working days in year 2021?

Here is the detail of the calculation:

Because 2021 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 15 public holidays that do not fall during a weekend and we obtain 246 working days in 2021.

Here is the list of these 15 public holidays:

1. New Year's Day : 星期五, 2021, 01, 1
2. St Patrick's Day : 星期一, 2021, 03, 15
3. Good Friday : 星期五, 2021, 04, 2
4. St George's Day : 星期一, 2021, 04, 26
5. Victoria Day : 星期一, 2021, 05, 24
6. June Day : 星期一, 2021, 06, 21
7. Canada Day : 星期四, 2021, 07, 1
8. Orangemen's day : 星期一, 2021, 07, 12
9. August Civic Holiday : 星期一, 2021, 08, 2
10. Labour Day : 星期一, 2021, 09, 6
11. National Day for Truth and Reconciliation : 星期四, 2021, 09, 30
12. Thanksgiving Day : 星期一, 2021, 10, 11
13. Remembrance Day : 星期四, 2021, 11, 11
14. Christmas (observance) : 星期一, 2021, 12, 27
15. Boxing Day (observance) : 星期二, 2021, 12, 28

And here are the 2 public holidays falling on a weekend:

1. Christmas : 星期六, 2021, 12, 25
2. Boxing Day : 星期日, 2021, 12, 26