KST to IDT Converter
Convert time between Korea Standard Time (KST) and Israel Daylight Time (IDT)
Korea Standard Time (KST)
Israel Daylight Time (IDT)
Time Difference
Israel Daylight Time (IDT) is 0 hours ahead of Korea Standard Time (KST)
Select Date
Select Time
Quick Reference
| KST | IDT |
|---|---|
| 11:00 | 05:00 |
| 13:00 | 07:00 |
| 15:00 | 09:00 |
| 17:00 | 11:00 |
| 19:00 | 13:00 |
| 21:00 | 15:00 |
| 23:00 | 17:00 |
| 01:00 | 19:00 |
| 03:00 | 21:00 |
| 05:00 | 23:00 |
| 07:00 | 01:00 |
| 09:00 | 03:00 |
Top 10 Most Common Time Zones
| Abbreviation | Full Name | UTC Offset | Typical Use |
|---|---|---|---|
| UTC | Coordinated Universal Time | UTC ±0 | Global reference standard (servers, logs, APIs) |
| EST / EDT | Eastern (US) Time | UTC −5 / −4 | New York, Toronto — North American business hub |
| CST / CDT | Central (US) Time | UTC −6 / −5 | Chicago, Dallas — US central business region |
| PST / PDT | Pacific (US) Time | UTC −8 / −7 | San Francisco, Los Angeles — tech industry standard |
| GMT / BST | Greenwich Mean / British Summer Time | UTC 0 / +1 | UK, used globally as a reference with UTC |
| CET / CEST | Central European (Summer) Time | UTC +1 / +2 | Paris, Berlin, Amsterdam — EU business core |
| IST | India Standard Time | UTC +5:30 | India — major IT & outsourcing region |
| CST | China Standard Time | UTC +8 | Beijing, Shanghai — East Asia business hub |
| JST | Japan Standard Time | UTC +9 | Tokyo — finance & tech hub |
| AEST / AEDT | Australian Eastern (Daylight) Time | UTC +10 / +11 | Sydney, Melbourne — APAC regional business |
Why Time Zone Abbreviations Are Ambiguous
Unlike standardized identifiers (like America/New_York or Europe/London from the IANA tz database), abbreviations such as "CST" or "IST" are not globally unique. They can refer to different time zones depending on context — country, region, or even time of year (due to daylight saving time).
Common Ambiguous Time Zone Abbreviations
| Abbrev. | Common Meaning(s) | UTC Offset | Region(s) |
|---|---|---|---|
| CST | Central Standard Time / China Standard Time / Cuba Standard Time | UTC−6 / UTC+8 / UTC−5 | North America, China, Cuba |
| IST | Indian Standard Time / Irish Standard Time / Israel Standard Time | UTC+5:30 / UTC+1 / UTC+2 | India, Ireland, Israel |
| AST | Atlantic Standard Time / Arabia Standard Time | UTC−4 / UTC+3 | Caribbean, Canada, Middle East |
| PST | Pacific Standard Time / Philippine Standard Time | UTC−8 / UTC+8 | North America, Philippines |
| EST | Eastern Standard Time (North America / Australia) | UTC−5 / UTC+10 | North America, Australia |
✅ Best Practice
To avoid ambiguity, always:
- Use IANA tz identifiers — e.g.,
America/New_Yorkinstead of "EST" - Specify UTC offset explicitly — e.g.,
UTC−5when abbreviations must be used - Include the full timezone name — e.g., "Eastern Standard Time (EST)" with UTC offset
About KST to IDT Time Conversion
Converting time between Korea Standard Time (KST) and Israel Daylight Time (IDT) helps coordinate work between Seoul, Busan, Incheon, and Israeli cities like Tel Aviv and Jerusalem. KST is UTC+9 while IDT is UTC+3, making KST 6 hours ahead of IDT.
This time zone converter uses the IANA timezone database to ensure accurate calculations. South Korea does not observe daylight saving, so KST is constant year-round. Israel uses IDT from late March to late October. Whether you are scheduling business meetings or coordinating with family, this converter delivers reliable results.
Common Use Cases for KST to IDT Conversion
Business & Work
- Scheduling meetings between Korea-based teams and Israeli partners
- Coordinating project deadlines across South Korea and Israel
- Planning conference calls between Seoul and Tel Aviv
Personal & Travel
- Planning travel itineraries between South Korea and Israel
- Coordinating with family and friends in Israel from South Korea
- Scheduling virtual events for KST and IDT audiences
Time Zone Information
Korea Standard Time (KST)
- UTC Offset: UTC+9
- IANA Timezone: Asia/Seoul
- Daylight Saving: None - KST is constant year-round
- Major Cities: Seoul, Busan, Incheon, Daegu, Daejeon, Gwangju
- Coverage: All of South Korea
Israel Daylight Time (IDT)
- UTC Offset: UTC+3 (UTC+2 during IST)
- IANA Timezone: Asia/Jerusalem
- Daylight Saving: Friday before last Sunday in March to last Sunday in October
- Major Cities: Tel Aviv, Jerusalem, Haifa, Eilat, Beersheba
- Coverage: All of Israel during daylight saving period (late March to late October)
Quick Reference: KST to IDT
Remember: KST is always 6 hours ahead of IDT during Israel's daylight saving period
Frequently Asked Questions
What is the time difference between KST and IDT?
Korea Standard Time (KST) is UTC+9, while Israel Daylight Time (IDT) is UTC+3. KST is 6 hours ahead of IDT. When it is 12:00 PM in Seoul, it is 6:00 AM in Tel Aviv.
When does this KST to IDT conversion apply?
KST is constant year-round (South Korea does not observe DST). IDT applies in Israel from late March to late October — so the 6-hour offset applies during that window. Outside it, when Israel uses IST (UTC+2), the offset becomes 7 hours.
How does the time difference change throughout the year?
KST never changes. The only shift comes from Israel: when Israel transitions to IST in late October, the offset between Korea and Israel grows to 7 hours.
What are the best times for KST-IDT business calls?
A 4:00 PM call in Seoul is 10:00 AM in Tel Aviv — a comfortable late afternoon for KST and a strong morning for IDT. Late afternoon in Korea aligns with morning in Israel for the most reliable overlap.
Which countries/regions use IDT timezone?
IDT is observed throughout Israel, including Tel Aviv, Jerusalem, Haifa, Eilat, and Beersheba. It is the daylight saving variant of Israel Standard Time and is used nationwide.
Which countries/regions use KST timezone?
KST is observed across all of South Korea, including Seoul, Busan, Incheon, Daegu, Daejeon, and Gwangju. South Korea does not observe daylight saving time.
Pro Tips
- • KST is 6 hours ahead of IDT — drop 6 hours from a Seoul time to get the Tel Aviv time.
- • South Korea never observes DST, so the offset shifts only when Israel transitions between IDT and IST.
- • Best meeting window: 3:00–6:00 PM KST overlaps with 9:00 AM–12:00 PM IDT.
- • When Israel switches to IST in late October, the offset grows to 7 hours.
- • Plan around Israel's Friday-Saturday weekend — Sunday is a working day in Israel.
- • Morning calls in Seoul (9:00 AM KST) are 3:00 AM in Tel Aviv — typically too early for live discussion.