World Time Calculator
Convert between Korea time, US Eastern, US Pacific, UTC/GMT, and other major time zones.
Converted Time
US time presets
Converted time
Wed, Jun 17, 2026, 20:30
Source time
Thu, Jun 18, 2026, 09:30
US market open (KST)
Thu, Jun 18, 2026, 22:30
US market close (KST)
Fri, Jun 19, 2026, 05:00
Major city time comparison
Seoul, Korea
Same date09:30
Thu, Jun 18, 2026
US Eastern
Previous day20:30
Wed, Jun 17, 2026
US Pacific
Previous day17:30
Wed, Jun 17, 2026
Honolulu, Hawaii
Previous day14:30
Wed, Jun 17, 2026
UTC
Same date00:30
Thu, Jun 18, 2026
London, UK
Same date01:30
Thu, Jun 18, 2026
Tokyo, Japan
Same date09:30
Thu, Jun 18, 2026
Sydney, Australia
Same date10:30
Thu, Jun 18, 2026
US Time and World Time Converter
The world time calculator converts dates and times across Korea, US time zones, UTC/GMT, Japan, China, Europe, and Australia.
World Time Search Use Cases
world time calculator
Major time-zone conversion
Convert Korea, US, UTC, Japan, and Europe times by date.
US time calculator
US Eastern and Pacific
Compare New York and Los Angeles time with Korea time.
Korea US time converter
Date change visible
See when time-zone conversion moves to the previous or next day.
US market time calculator
Trading session in KST
Check the New York regular session converted into Korea time.
UTC GMT converter
Reference time conversion
Convert UTC/GMT event notices, logs, and schedules into local time.
meeting time converter
Global meeting planning
Compare Seoul, New York, Los Angeles, London, Tokyo, and Sydney for calls.
World Time Conversion Guide
Korea and US Time
Convert Korea time to US Eastern, Pacific, Central, and Mountain time zones with date changes shown clearly.
Daylight Saving Time
The calculation uses browser time-zone data for the selected date, so daylight saving time is reflected.
US Market Hours
For ETF investors, the page also converts the New York regular trading session to Korea time.
US Eastern and Pacific Time
Compare New York and Los Angeles time when planning calls, trading windows, or US-market events.
International Meeting Time
Use Korea, US, and Europe time zones together to find meeting times and date changes across regions.
ETF Trading Time Check
The page focuses on the regular US session in Korea time, which is often the first check for ETF investors.
UTC and GMT Conversion
Convert UTC or GMT-based event notices, server logs, and travel schedules into Korea, New York, London, or Sydney time.
London, Tokyo, and Sydney
Compare Europe, Japan, and Australia time zones when a meeting or deadline crosses the international date line.
World Time Calculator FAQ
Is daylight saving time reflected?
Yes. Browser time-zone data is used for the selected date.
Can I check US stock market hours?
Yes. The page also shows the selected date’s New York regular session in Korea time.
Can I convert UTC and GMT?
Yes. Select UTC as the source or target time zone to convert UTC/GMT-based times.
Are all cities supported?
The current list focuses on Korea, major US time zones, UTC, Japan, China, Europe, and Sydney.
Related time calculators
World Time Checks People Need Next
Use this page for date-specific time-zone conversion, especially when Korea, US market hours, UTC notices, and daylight saving time are involved.
- New York and Los Angeles use different US time zones.
- US market hours are shown from the New York regular session.
- UTC and GMT are useful for server logs, events, and travel schedules.