Seongnam uses Asia/Seoul — UTC+09:00 (KST) in standard time. It is located in Gyeonggi-do, South Korea. The live clock shows the current local time and updates every second.
Everything you need to know about Seongnam's time zone, UTC offset, and Daylight Saving Time schedule.
Seongnam uses UTC+09:00 in standard time. This is the offset used outside the daylight saving period.
This zone does not observe daylight saving time and stays on UTC+09:00 year-round.
The official IANA time zone name for Seongnam is Asia/Seoul. This identifier is used in programming, operating systems and calendar applications worldwide.
No daylight saving transitions are scheduled for this zone.
Seoul, Busan, Incheon, Daegu, Daejeon
Currency: South Korean Won (KRW). Calling code: +82. Languages: Korean.
Seongnam (Korean: 성남; Korean pronunciation: [sʰʌŋ.nam]) is the fourth largest city in South Korea's Gyeonggi Province after Suwon and the 10th largest city in the country. Its population is approximately one million. It consists of three administrative districts: Bundang District, Jungwon District, and Sujeong District.
Seongnam, one of the foremost planned cities in South Korean history, was conceived during the era of President Park Chung Hee for the purpose of industrializing the nation by concentrating electronic, textile, and petrochemical facilities there during the 1970s and 1980s.
The city featured a network of roads, to Seoul and other major cities like Gwangju, Gyeonggi, from the early 1970s on. Today, Seongnam has merged with the metropolitan network of Seoul. Seongnam has also served as a "test bed" of South Korea's urban planning history.
Bundang, one of the successful new town projects in the country, has been settled in the southern half of Seongnam since 1991.
Source: Wikipedia contributors — Seongnam. Adapted text is available under CC BY-SA 4.0; see licence details. Reviewed by the TimeZoria AI Editorial Team.
914,832 residents (GeoNames city population; metro areas may be larger).
Gyeonggi-do, South Korea.
Asia/Seoul · UTC+09:00 (KST).
No daylight saving time.
South Korean Won (KRW) · +82.
Anyang, Seoul, Suwon
Seoul Gimpo International Airport (GMP) about 33.4 km from the city coordinates. Source: OurAirports (public domain).
2024 averages: daily highs 17.8°C and lows 8.4°C. Warmest month: August (average high 31.2°C); coolest month: January (average low -6.4°C). Source: Open-Meteo (CC BY 4.0).
Numerous major companies have migrated their headquarters from Downtown Seoul to Seongnam to help government's plan to accelerate the dispersion of Seoul's population to its suburbs and relieve the congested Seoul metropolitan area. Seongnam is now home to prominent companies such as KT (formerly Korea Telecom), Naver, and HD Hyundai Heavy Industries. Source: Wikipedia contributors · CC BY-SA 4.0 (adapted).
Region: Gyeonggi-do · IANA zone: Asia/Seoul · Open data sources and licence details: TimeZoria AI licenses.
Current time in major cities compared to Seongnam. Times update live every second.
Note on DST transitions: The offsets shown above reflect the current live offset, which changes twice a year due to Daylight Saving Time. Different regions change their clocks on different dates, which means the difference between Seongnam and another city can vary by 1 hour for a short period in spring and autumn. Always verify the exact time difference around DST transition dates for critical scheduling.
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Seongnam's time zone affects business hours, travel plans and international calls. The Asia/Seoul zone is used for local scheduling, transport and everyday life in Gyeonggi-do.
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Common questions about Seongnam's time zone, UTC offset, and DST.