Korea Standard Time (KST) · UTC+9 · No Daylight Saving Time · Same as Japan (JST)
KST (UTC+9) is identical to Japan's JST. Differences shift when other countries change clocks for DST.
| Location | Their Winter | Their Summer |
|---|---|---|
| New York (ET) | KST is +14 hrs | KST is +13 hrs |
| Los Angeles (PT) | KST is +17 hrs | KST is +16 hrs |
| London (GMT/BST) | KST is +9 hrs | KST is +8 hrs |
| Japan (JST) | Same time | Same time |
| China (CST) | KST is +1 hr | KST is +1 hr |
| India (IST) | KST is +3:30 | KST is +3:30 |
| Sydney (AET) | KST is −2 hrs | KST is −1 hr |
Korea's time zone has a complex history tied to its colonial past. Before 1908, Korea used its own standard based on 127.5°E longitude (UTC+8:30). During Japanese occupation (1910–1945), Korea was forced onto Japan Standard Time (UTC+9).
After liberation in 1945, South Korea briefly returned to UTC+8:30 but switched back to UTC+9 in 1961 under Park Chung-hee for economic alignment with Japan. North Korea adopted UTC+8:30 (“Pyongyang Time”) in 2015 but reverted to UTC+9 in 2018 during inter-Korean talks.
South Korea used DST during the 1988 Seoul Olympics but discontinued it afterward. Today both Koreas use UTC+9.
| City | Local Time | Difference |
|---|---|---|
| New York | --:-- | Same time |
| London | --:-- | Same time |
| Toronto | --:-- | Same time |
| Miami | --:-- | Same time |
| Los Angeles | --:-- | Same time |
| Mexico City | --:-- | Same time |
| Madrid | --:-- | Same time |
| Paris | --:-- | Same time |
| Berlin | --:-- | Same time |
| Dubai | --:-- | Same time |
| Tokyo | --:-- | Same time |
| Sydney | --:-- | Same time |
| São Paulo | --:-- | Same time |
| Singapore | --:-- | Same time |
Target 9 AM – 5 PM South Korea local time for business calls. Calling South Korea from the US requires planning. East Coast (EST): try 7–10 PM for a morning call. West Coast (PST): 4–7 PM. From the UK, early morning calls (7–9 AM GMT) reach South Korea during business hours.
South Korea uses KST (UTC+9) year-round. Seoul is the capital and largest city.
South Korea does not observe Daylight Saving Time. The UTC offset stays fixed year-round — only countries that do observe DST (US, EU, UK) will shift relative to South Korea twice a year.
When traveling to South Korea, expect significant jet lag if coming from Europe or the Americas. Allow 1–2 days to adjust. Set your phone to local time immediately upon arrival. The primary language is Korean. Business meetings often start punctually.
South Korea uses a single time zone (KST (UTC+9)). This makes it relatively straightforward to coordinate times across the country.
The capital city Seoul serves as the political and often economic center of South Korea. Major business activities are spread across cities including Seoul, Busan, Incheon.
When planning international calls, video conferences, or business meetings with contacts in South Korea, it's important to consider the time difference. KST (UTC+9) is the most commonly referenced time zone for South Korea.
South Korea uses the South Korean Won (₩) as its official currency. The international dialing code is +82. Official languages include Korean.
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