IDT to CST Converter
Convert time between Israel Daylight Time (IDT) and Central Standard Time (CST)
Israel Daylight Time (IDT)
Central Standard Time (CST)
Time Difference
Central Standard Time (CST) is 0 hours ahead of Israel Daylight Time (IDT)
Select Date
Select Time
Quick Reference
| IDT | CST |
|---|---|
| 05:00 | 21:00 |
| 07:00 | 23:00 |
| 09:00 | 01:00 |
| 11:00 | 03:00 |
| 13:00 | 05:00 |
| 15:00 | 07:00 |
| 17:00 | 09:00 |
| 19:00 | 11:00 |
| 21:00 | 13:00 |
| 23:00 | 15:00 |
| 01:00 | 17:00 |
| 03:00 | 19:00 |
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 IDT to CST Time Conversion
Converting time between Israel Daylight Time (IDT) and Central Standard Time (CST) helps coordinate work between Tel Aviv and Jerusalem and US Central cities like Chicago, Houston, and Dallas. IDT is UTC+3 while CST is UTC-6, placing IDT 9 hours ahead of CST.
This time zone converter uses the IANA timezone database to ensure accurate calculations. CST is the winter standard time in the US Central region (early November through mid-March), while IDT applies in Israel from late March to late October — so direct IDT-to-CST pairings are most relevant near DST transitions. For most of Israel's daylight saving period the US Central region is on CDT (8 hours behind IDT).
Common Use Cases for IDT to CST Conversion
Business & Work
- Scheduling meetings between Israeli teams and US Central partners around DST transitions
- Coordinating project deadlines across Israel and the US Central region
- Planning conference calls between Tel Aviv and Chicago
Personal & Travel
- Planning travel itineraries between Israel and the US Central region
- Coordinating with family and friends in US Central states from Israel
- Scheduling virtual events for IDT and CST audiences
Time Zone Information
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)
Central Standard Time (CST)
- UTC Offset: UTC-6 (UTC-5 during CDT)
- IANA Timezone: America/Chicago
- Daylight Saving: First Sunday in November to Second Sunday in March (CST window); CDT covers the rest
- Major Cities: Chicago, Houston, Dallas, San Antonio, Austin, Memphis, New Orleans
- Coverage: US Central time zone during winter standard time
Quick Reference: IDT to CST
Remember: IDT is always 9 hours ahead of CST
Frequently Asked Questions
What is the time difference between IDT and CST?
Israel Daylight Time (IDT) is UTC+3, while Central Standard Time (CST) is UTC-6. IDT is 9 hours ahead of CST. When it is 12:00 PM in Tel Aviv, it is 3:00 AM in Chicago.
When does this IDT to CST conversion apply?
CST is the winter standard time in the US Central region (early November through mid-March). IDT applies in Israel from late March to late October — so direct IDT-to-CST pairings are most relevant near the DST transitions.
How does the time difference change throughout the year?
When the US Central region switches to CDT (UTC-5) in March, the offset to IDT narrows to 8 hours. When Israel returns to IST (UTC+2) in late October, the offset between IST and CST is 8 hours.
What are the best times for IDT-CST business calls?
A 6:00 PM call in Tel Aviv is 9:00 AM in Chicago — workable as an evening for IDT and a strong morning for CST. Beyond about 8:00 PM IDT the live overlap closes.
Which countries/regions use CST timezone?
CST covers the US Central time zone during winter — including Chicago, Houston, Dallas, San Antonio, Austin, Memphis, and New Orleans. Most of Mexico no longer observes DST.
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.
Pro Tips
- • IDT is 9 hours ahead of CST — drop 9 hours from a Tel Aviv time to get the Chicago time.
- • Best meeting window: 5:00–7:00 PM IDT overlaps with 8:00–10:00 AM CST.
- • Most of Israel's daylight saving period overlaps with US CDT (8 hours), not CST (9 hours).
- • Around DST transitions in March and November, double-check the offset before sending invites.
- • Plan around Israel's Friday-Saturday weekend — Sunday is a working day in Israel.
- • Asynchronous communication generally works better than live calls for the IDT-CST pair.