Osaka

Japan • Japan Standard Time

Time Zone

Osaka uses Japan Standard Time (JST), currently running at UTC+9 (year-round). Japan does not observe daylight saving time. JST (UTC+9) is fixed year-round across all of Japan.

Business & Commerce

Osaka, Japan's second-largest city and the commercial center of the Kansai region, operates on Japan Standard Time (JST, UTC+9) — the same fixed offset used across all of Japan, with no daylight saving time since Japan abandoned it in 1952. Osaka's clock is always identical to Tokyo's. The Osaka Exchange (OSE) handles a significant share of Japanese futures and derivatives trading, particularly in Nikkei 225 index contracts. At UTC+9, Osaka is nine hours ahead of London (GMT) and fourteen hours ahead of New York (EST) in winter, meaning the full Japanese business day runs while Europe and the Americas remain overnight. Osaka is Japan's traditional trading city and a major center for food processing, pharmaceuticals, and electronics manufacturing — industries deeply integrated into global supply chains that regularly cross the UTC+9 time boundary. The predictability of the fixed JST offset simplifies scheduling across all of Japan.