JST to CST Time Converter

JST refers to the Asia/Tokyo timezone, currently ++9 (GMT+9). CST refers to America/Chicago, currently --5 (GMT-5). Timezone abbreviation meanings and offsets are calculated live from the IANA tz database, so Daylight Saving Time is always applied correctly.

Representative cities: Tokyo (Japan) for JST and New York (United States) for CST.

Key Facts

• JST (Asia/Tokyo): current live offset ++9.
• CST (America/Chicago): current live offset --5.
• Time difference is computed from live IANA tzdb offsets and may shift by one hour during DST transitions.