China officially operates on a single timezone: China Standard Time (CST, UTC+8). This applies nationwide — despite the country's vast east-west span covering what would geographically be five separate time zones, Beijing time is used everywhere from Shanghai and Guangzhou on the east coast to Kashgar and Ürümqi in the far west.
There is no daylight saving time in China. Clocks never change, making CST fixed and highly predictable year-round.
In Xinjiang (Ürümqi, Kashgar), many residents and businesses informally use 'Xinjiang Time' (UTC+6), two hours behind Beijing time, to align with actual sunrise and sunset. However, official government and transport schedules always use CST (UTC+8).
Key time differences from Beijing (CST): London (GMT) is 8 hours behind in winter, 7 hours behind during BST. New York (EST) is 13 hours behind. Los Angeles (PST) is 16 hours behind. Tokyo (JST) and Seoul (KST) are 1 hour ahead. Singapore and Hong Kong share the same UTC+8 offset. Mumbai (IST) is 2.5 hours behind.