Time systems, calendar references, and timezone tools.

Time-zone reference

JST

JST is the year-round time standard used across Japan, with no daylight-saving shift.

What this abbreviation usually means

Because Japan stays on one national time year-round, JST is a clean example of a major non-DST zone.

Reference offset

JST is commonly associated with UTC+9. The current IANA reference on this page resolves to UTC+9 right now.

Representative locations

Tokyo, Osaka, Sapporo are the places most readers expect when they search for this abbreviation.

DST handling

This zone is typically treated as a fixed year-round reference without a daylight-saving jump.

Best next step

Use the dedicated converter when you need to translate a specific meeting or timestamp between this zone and another one.

Compare JST with related zones

These are the abbreviations people most often compare against this reference.

UTC Open the UTC reference page and compare it directly with JST. IST (India) Open the IST (India) reference page and compare it directly with JST. AEST Open the AEST reference page and compare it directly with JST. Timezone Converter Convert a specific date and time between JST and any other major world zone.