定义一个时期

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How many working days in year 2040?

Here is the detail of the calculation:

Because 2040 is a leap year, it has 366 days.

Let's remove 52 saturdays and 53 sundays. It remains 261 days.

Now, let's remove 4 public holidays that do not fall during a weekend and we obtain 257 working days in 2040.

Here is the list of these 4 public holidays:

1. Good Friday : 2040年3月30日星期五
2. Labour Day : 2040年5月1日星期二
3. National Day : 2040年8月9日星期四
4. Christmas Day : 2040年12月25日星期二

And here is the public holiday falling on a weekend:

1. New Year's Day : 2040年1月1日星期日