定义一个时期

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How many working days in year 1952?

Here is the detail of the calculation:

Because 1952 is a leap year, it has 366 days.

Let's remove 52 saturdays and 52 sundays. It remains 262 days.

Now, let's remove 4 public holidays that do not fall during a weekend and we obtain 258 working days in 1952.

Here is the list of these 4 public holidays:

1. New Year's Day : 1952年1月1日星期二
2. Good Friday : 1952年4月11日星期五
3. Labour Day : 1952年5月1日星期四
4. Christmas Day : 1952年12月25日星期四

And here is the public holiday falling on a weekend:

1. National Day : 1952年8月9日星期六