Phoenix has no daylight savings time.

凤凰城不需要挤时间。

This weekend is Daylight Savings Time.

本周末是冬夏时调整日。

You must address daylight savings time by business rules.

必须用事务规则说明夏令时。

It is always darkest before... daylight savings time.

黑暗总在…日光节约时间前(这个太赞了！)

The two most people encounter are leap year and daylight savings time.

人们最常遇到的两种情况是闰年和夏令时。