Bangkok operates on ICT — Indochina Time (UTC +7:00) year-round. Thailand, like many Southeast Asian countries, does not observe daylight saving time, giving Bangkok a stable and predictable UTC +7:00 offset every day of the year. Bangkok shares this timezone with Hanoi, Ho Chi Minh City, Phnom Penh, Vientiane, and Jakarta (WIB).
As Thailand's capital and Southeast Asia's second-largest city by metropolitan population, Bangkok is a major hub for tourism, manufacturing, and regional finance. The Stock Exchange of Thailand (SET) operates from 10:00 AM to 12:30 PM and 2:30 PM to 4:30 PM ICT, Monday to Friday — a split-session structure that reflects local business culture.
Bangkok's timezone position makes it an intermediate clock between Singapore/Hong Kong (1 hour ahead at UTC +8:00) and Mumbai (30 minutes behind at UTC +5:30). From London (GMT), Bangkok is 7 hours ahead — so 9:00 AM London is 4:00 PM in Bangkok, offering a practical late-afternoon Bangkok window for London morning calls. From New York (EST), Bangkok is 12 hours ahead in winter, meaning a 9:00 AM EST call reaches Bangkok at 9:00 PM ICT — outside business hours. From Sydney (AEST), Bangkok is 3 hours behind, making Australia-to-Thailand scheduling relatively comfortable.
Thailand's tourism industry, one of Asia's largest, means Bangkok's time is frequently checked by travellers from Europe and Australia planning itineraries across the region. The ICT timezone covers a significant tourist corridor from Vietnam through Cambodia, Laos, and Thailand — all sharing UTC +7:00.