Daylight saving time
 |
| Daylight saving time |
Not all areas observe DST, and the dates and times when it begins and ends can vary. Some countries and regions, such as most of Arizona and Hawaii in the United States, do not observe DST. In these areas, the clock remains on standard time year-round.
It's a good idea to check the specific dates and times when DST begins and ends in your area, as they can change from year to year. You can find this information online or by contacting your local government or timekeeping authority.
DST is a way to make better use of natural daylight. By setting the clock ahead by one hour during the summer months, people can enjoy more daylight in the evenings, which can be especially useful for outdoor activities. However, DST can also have some downsides, such as disrupting sleep patterns and causing confusion when traveling to other time zones.
Some people argue that DST is no longer necessary because of advances in artificial lighting and changes in modern society, such as the widespread use of air conditioning, which means that people are less likely to be outdoors in the evenings in the summer. Others believe that DST is still useful because it saves energy and reduces the need for artificial lighting.
The decision to observe DST is made at the national or regional level, and different countries and regions have different policies. Some countries, such as the United States and Canada, have been observing DST for more than 100 years, while others, such as Japan and most countries in Africa, do not observe DST at all. Some countries, such as Russia, have a complicated system of observing DST that changes from year to year.
