CalKit

Time Zone Calculator

Calculate time differences between major world cities.

뉴욕 (UTC-5) 시간
-14시간
오후 10:00 (전날)

시간대 정보

서울 (UTC+9)오후 12:00
뉴욕 (UTC-5)오후 10:00 (전날)
시차-14시간
출발지 UTCUTC+9
목적지 UTCUTC-5

Overview

The Time Zone Calculator computes the time difference between two cities or time zones and converts a specific time from one zone to another. It is essential for international travel, global meetings, and cross-border business communication.

Formula

Time Difference = Destination UTC Offset − Origin UTC Offset. Korea Standard Time (KST) is UTC+9.

How to Use

  1. 1Select the origin (or your current) time zone.
  2. 2Select the destination (or the other party's) time zone.
  3. 3The time difference and the current time in the other city are displayed automatically.
  4. 4Enter a specific time to convert it to the destination time zone.

Tips

  • ✔Countries that observe Daylight Saving Time (DST) may shift by 1 hour depending on the season.
  • ✔South Korea does not observe DST, so KST remains UTC+9 year-round.
  • ✔Share international meeting schedules in UTC to avoid confusion.
  • ✔The United States spans 4+ time zones, so confirm the exact city.

FAQ

Q. What is the time difference between South Korea and New York?

Korea (KST, UTC+9) is 14 hours ahead of New York (EST, UTC−5). During DST (March–November), the gap shrinks to 13 hours.

Q. What is Daylight Saving Time (DST)?

DST is the practice of advancing clocks by 1 hour during summer to extend evening daylight. It is observed in the US and Europe but not in South Korea or Japan.

Q. Are UTC and GMT the same?

For practical purposes they are nearly identical, but UTC is based on atomic clocks and is the official international standard, while GMT is based on astronomical observation.

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