- Which major countries do not observe daylight saving time?
- Major countries with no DST include China, India, Japan, South Korea, Singapore, most of Africa, Saudi Arabia, the UAE, Indonesia, Thailand, Vietnam, Bangladesh, Pakistan, and — as of recent years — Mexico (most states) and Brazil.
- Why do some countries not observe DST?
- Reasons vary: tropical countries near the equator have minimal seasonal variation in daylight, making DST pointless. Large countries like China and India prefer a single national offset for unity. Others abolished DST after research showed minimal energy savings and health costs from disrupted sleep.
- What is the scheduling advantage of dealing with a non-DST country?
- Non-DST countries have fixed UTC offsets year-round. When scheduling with India, Japan, or Singapore, you only need to track changes on your end — the other side never changes. This predictability simplifies recurring meeting management significantly.
