What Time Zone Is Thailand In?
Thailand uses a single timezone: the primary designation is Asia/Bangkok, which is currently UTC+07:00 from Coordinated Universal Time. The IANA Time Zone Database , the authoritative global reference used by operating systems, web services, and programming languages worldwide, lists this as Asia/Bangkok.
Regional Context
Southeast Asia spans UTC+06:30 (Myanmar) to UTC+09:00 (Philippines, Indonesia East) with considerable political variation. Singapore and Malaysia use UTC+08:00, aligning themselves with China and Hong Kong rather than their geographic position (approximately UTC+07:00-UTC+07:30 would be solar time for Kuala Lumpur at 101°E). This shift was made in 1982 for economic alignment with regional trading partners. Vietnam unified its timezone to UTC+07:00 in 1975, dropping the earlier split between north (UTC+07:00) and south (UTC+08:00). The Philippines uses UTC+08:00 despite being centered around 122°E (where UTC+08:08 would be solar). Indonesia operates three zones: WIB (UTC+07:00, Java and Sumatra), WITA (UTC+08:00, Bali and Sulawesi), and WIT (UTC+09:00, Papua). No Southeast Asian country currently observes Daylight Saving Time.
Current Time in Bangkok
The capital city Bangkok observes the Asia/Bangkok timezone, currently at UTC+07:00. The live clock above updates every second using your browser's Intl.DateTimeFormat API with the IANA zone identifier. To convert Bangkok time to UTC, subtract the offset shown: Bangkok's local time minus 07:00 hours equals UTC.
Daylight Saving Time in Thailand
The DST status for Thailand is shown in the indicator above. When DST is in effect, clocks advance by one hour, temporarily shifting Thailand's UTC offset by +1. Countries that do not observe DST, including Japan, China, India, and most of Africa, maintain a fixed offset year-round. The IANA Time Zone Database contains the complete historical record of DST transitions for Asia/Bangkok, including past rule changes and future scheduled transitions.
Scheduling Calls With Thailand
When arranging calls or meetings with contacts in Thailand, standard business hours run 09:00 to 18:00 local time (Asia/Bangkok). In UTC, that window is 02:45 to 11:45 UTC. The time difference tool on this site calculates the overlap between any two cities' business hours, so you can find the shared window without mental arithmetic. If you're in a different country, visit the time difference page for your city vs. Bangkokfor a full hour-by-hour breakdown.
Timezone Abbreviation for Thailand
The GMT+7 abbreviation appears on airline tickets, broadcast schedules, and financial contracts when referencing Thailand time. Timezone abbreviations are not globally unique, IST, for example, can mean India Standard Time (UTC+05:30), Irish Standard Time (UTC+01:00), or Israel Standard Time (UTC+02:00). The IANA identifier Asia/Bangkok is unambiguous: it maps to exactly one timezone in the world. When writing times for a global audience, always include both the abbreviation and the UTC offset to prevent misreading. The IANA Time Zone Database records every past and future rule change for Asia/Bangkok, making it the only reliable reference for historical time conversions.
Calling Thailand from Abroad
International callers reach Thailand using the code +66. Standard business hours run 09:00 to 18:00 local (Asia/Bangkok), which in UTC is 02:45 to 11:45 UTC. The best window for international calls is 10:00 to 16:00 Thailand local time, after the morning rush and before post-17:00 wind-down. Mobile coverage in Bangkok follows local carrier standards. International roaming calls to Thailand are billed at the caller's international rate, not the local Thailand rate.
Currency and Banking Hours in Thailand
Domestic banks in Bangkok operate on Asia/Bangkok time. Wire transfers, invoice settlements, and currency conversions must typically be initiated before 17:00 Thailand local time to be processed same-day. The forex market trades 24 hours, but domestic banking settlement in Thailand follows Asia/Bangkok business hours. When sending international transfers to Thailand, factor in the UTC offset (UTC+07:00) to ensure your instruction arrives before the local cut-off time. Same-day settlement typically requires initiation before 08:45 UTC.
Thailand: A Single-Zone Country
Thailand observes a single timezone nationwide: Asia/Bangkok (UTC+07:00). Single-zone countries have a scheduling advantage, there is no ambiguity about which zone a meeting time refers to, and businesses across the country share the same clock. This simplifies domestic commerce, broadcast scheduling, and government coordination.