定义一个时期

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How many working days in year 2003?

Here is the detail of the calculation:

Because 2003 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 4 public holidays that do not fall during a weekend and we obtain 257 working days in 2003.

Here is the list of these 4 public holidays:

1. New Year's Day : 2003年1月1日星期三
2. Good Friday : 2003年4月18日星期五
3. Labour Day : 2003年5月1日星期四
4. Christmas Day : 2003年12月25日星期四

And here is the public holiday falling on a weekend:

1. National Day : 2003年8月9日星期六