Most of the world’s population never touches their clocks. Daylight saving is largely a North American and European habit.
| Country | Offset | Notes |
|---|---|---|
| India | UTC+5:30 | No DST since wartime use in the 1940s |
| China | UTC+8 | Tried DST in the 1980s, dropped it in 1991 |
| Japan | UTC+9 | No DST since the postwar occupation era |
| Russia | UTC+2 to +12 | Abolished clock changes in 2014 |
| Turkey | UTC+3 | Stayed on permanent summer time since 2016 |
| Iceland | UTC+0 | Year-round GMT despite its latitude |
| Argentina | UTC-3 | No clock changes since 2009 |
| Singapore | UTC+8 | Fixed offset year-round |
| UAE / Saudi Arabia | UTC+4 / +3 | No DST anywhere in the Gulf |
Even DST countries have holdouts. In the US, Hawaii and most of Arizona never change clocks (the Navajo Nation within Arizona does). In Australia, Queensland, Western Australia, and the Northern Territory skip DST while the southeastern states observe it — so Australia has more effective timezones in summer.
When only one side of a call observes DST, the gap between you shifts twice a year. A US–India meeting moves an hour in IST every March and November because only the US changes. Same for UK–India, EU–China, and US–Japan. Check the current gap with our meeting planner and the exact 2026 change dates in the DST guide.
No. India has not observed DST since brief wartime use in the 20th century. IST stays at UTC+5:30 all year.
Hawaii and most of Arizona (the Navajo Nation is the exception within Arizona). US territories such as Puerto Rico and Guam also skip DST.
No. China used DST briefly from 1986 to 1991 and then abolished it. The whole country stays on UTC+8 year-round.