定义一个时期

...

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 10 public holidays that do not fall during a weekend and we obtain 251 working days in 2021.

Here is the list of these 10 public holidays:

1. New Year's Day : 星期五, 2021, 01, 1
2. Islander Day : 星期一, 2021, 02, 15
3. Good Friday : 星期五, 2021, 04, 2
4. Victoria Day : 星期一, 2021, 05, 24
5. Canada Day : 星期四, 2021, 07, 1
6. Federal Civic Holiday : 星期一, 2021, 08, 2
7. Labour Day : 星期一, 2021, 09, 6
8. National Day for Truth and Reconciliation : 星期四, 2021, 09, 30
9. Thanksgiving Day : 星期一, 2021, 10, 11
10. Remembrance Day : 星期四, 2021, 11, 11

And here is the public holiday falling on a weekend:

1. Christmas : 星期六, 2021, 12, 25