- It’s daylight saving time, not daylight savings time
While it’s common to hear people say “daylight savings time” or just “daylight savings,” the correct term is “daylight saving time.” There’s a grammatical reason for keeping “saving” singular, but you can also think of it this way: What are you doing during this time? Saving daylight. Thus, daylight saving time.
2. It’s not a worldwide (or even nationwide) phenomenon
About 70 countries observe daylight saving time nationwide or in certain regions. Most African and Asian countries, including India, China and Japan, skip the clock change altogether.
Not all U.S. states practice daylight saving time, either. Hawaii and Arizona are on permanent standard time, as are Guam, American Samoa, Puerto Rico and the Virgin Islands.
3. It has an impact on your health
Losing an hour of sleep each March can take a serious toll on your well-being. The shift to daylight saving time has been linked to an uptick in heart attacks, strokes, traffic fatalities and workplace injuries — and some sleep experts have called for an end to springing forward altogether.
