JST to CDT Time Converter

When it is 9:00 AM JST, it is 7:00 PM CDT. Central Daylight Time (CDT, UTC-5) is 14 hours behind Japan Standard Time (JST, UTC+9). There is no full 9–5 overlap between JST and CDT — teams typically rotate early or late meetings.

JST to CDT Conversion Table

Major Cities Using JST and CDT

Japan Standard Time (JST): Tokyo, Osaka, Kyoto, Yokohama.

Central Daylight Time (CDT): Chicago, Dallas, Houston, Mexico City, Winnipeg.

How many hours between JST and CDT?

JST is UTC+9 and CDT is UTC-5, a difference of 14 hours. CDT is behind JST. This difference can shift by an hour in either direction during Daylight Saving Time transitions — if one zone observes DST and the other doesn't, the offset narrows or widens for part of the year.

Business Hours Overlap: JST ↔ CDT

Assuming a 9:00 AM – 5:00 PM workday on each side, there is no full 9–5 overlap between jst and cdt — teams typically rotate early or late meetings. To visualize this instantly for any pair of cities, use the visual meeting planner or the timezone overlap finder — both highlight the green overlap window on a live timeline.

Does JST observe Daylight Saving Time?

Japan Standard Time (JST) is based on the Asia/Tokyo IANA timezone. DST observance depends on the jurisdiction — for example, most of the continental US switches between standard and daylight time, while India, Japan, and most of Southeast Asia do not observe DST at all. WorldClock.lol uses the authoritative IANA timezone database, so every conversion automatically accounts for the correct DST rules on the date you're converting.

When is 9 AM JST in CDT?

When it is 9:00 AM in Japan Standard Time (JST, UTC+9), it is 7:00 PM in Central Daylight Time (CDT). For other times of day, scan the conversion table above or drop into the interactive converter to pick an exact minute. The converter handles both standard and daylight variants correctly.

How to Use This JST to CDT Converter

1. Type or drag any time in the JST input above — the CDT equivalent updates instantly.
2. Check the day indicator. When the converted time crosses midnight, the tool shows +1 day or −1 day so you don't book a meeting on the wrong date.
3. Copy the shareable URL to send the specific conversion to a colleague — the link preserves your exact selection.
4. Switch directions by swapping the input zones, or open CDT to JST for the reverse.

Related JST Converters

• JST to EST
• JST to PST
• JST to GMT
• JST to UTC
• JST to IST
• JST to CET

Related CDT Converters

• EST to CDT
• PST to CDT
• GMT to CDT
• UTC to CDT
• IST to CDT
• CET to CDT

More Time Tools

• All Time Zone Converters — browse every supported pair
• About JST (Japan Standard Time) — current time, cities, DST rules
• About CDT (Central Daylight Time) — current time, cities, DST rules
• Meeting Planner — find the best time for a multi-city meeting
• Best Time to Call — optimal calling windows between any two cities
• UTC Time Now — the reference point for every conversion
• DST Schedule 2026 — every daylight-saving transition this year