IDT to HKT Converter
Convert time between Israel Daylight Time (IDT) and Hong Kong Time (HKT)
Israel Daylight Time (IDT)
Hong Kong Time (HKT)
Time Difference
Hong Kong Time (HKT) is 0 hours ahead of Israel Daylight Time (IDT)
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Select Time
Quick Reference
| IDT | HKT |
|---|---|
| 05:00 | 10:00 |
| 07:00 | 12:00 |
| 09:00 | 14:00 |
| 11:00 | 16:00 |
| 13:00 | 18:00 |
| 15:00 | 20:00 |
| 17:00 | 22:00 |
| 19:00 | 00:00 |
| 21:00 | 02:00 |
| 23:00 | 04:00 |
| 01:00 | 06:00 |
| 03:00 | 08:00 |
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 HKT Time Conversion
Converting time between Israel Daylight Time (IDT) and Hong Kong Time (HKT) is a 5-hour calculation during Israel's summer DST period. IDT is UTC+3, while HKT is UTC+8 year-round, so Hong Kong is 5 hours ahead of Tel Aviv, Jerusalem and Haifa from late March to late October. In winter, Israel switches to IST (UTC+2) and the gap widens to 6 hours.
This time zone converter uses the IANA timezone database (Asia/Jerusalem and Asia/Hong_Kong) for accurate calculations. Hong Kong does not observe daylight saving, so only the Israel side shifts. Note that IDT here means Israel Daylight Time — not India Standard Time, which uses the same abbreviation informally. Whether you are scheduling Tel Aviv to Hong Kong calls, coordinating with Hong Kong partners or planning travel, our converter handles the DST switch automatically.
Common Use Cases for IDT to HKT Conversion
Business & Work
- Scheduling calls between Tel Aviv tech or finance teams and Hong Kong
- Coordinating trade, R&D and investment workflows between Israel and East Asia
- Planning conference calls with Hong Kong partners from Jerusalem, Haifa or Beersheba during Israeli summer
Personal & Travel
- Planning travel from Israel to Hong Kong during summer months
- Coordinating with family and friends in Hong Kong from Tel Aviv or Jerusalem
- Scheduling virtual events with Hong Kong contacts during Israeli DST
Time Zone Information
Israel Daylight Time (IDT)
- UTC Offset: UTC+3 (UTC+2 IST in winter)
- IANA Timezone: Asia/Jerusalem
- Daylight Saving: Late March to late October (Friday before last Sunday in March to last Sunday in October)
- Major Cities: Tel Aviv, Jerusalem, Haifa, Rishon LeZion, Beersheba
- Coverage: Israel
Hong Kong Time (HKT)
- UTC Offset: UTC+8
- IANA Timezone: Asia/Hong_Kong
- Daylight Saving: No daylight saving time (consistent year-round)
- Major Cities: Hong Kong, Kowloon, Tsuen Wan, Yuen Long
- Coverage: Hong Kong Special Administrative Region
Quick Reference: IDT to HKT
Remember: HKT is 5 hours ahead of IDT during Israel's summer DST. In winter, Israel uses IST (UTC+2) and the gap becomes 6 hours.
Frequently Asked Questions
Does IDT mean Israel Daylight Time on this converter?
Yes. IDT here means Israel Daylight Time (UTC+3, Asia/Jerusalem during summer DST). The abbreviation IDT is sometimes used informally for India Standard Time, but the official Indian abbreviation is IST (UTC+5:30) — see the IST to HKT converter for India.
What is the time difference between IDT and HKT?
Israel Daylight Time (IDT) is UTC+3, while Hong Kong Time (HKT) is UTC+8. HKT is 5 hours ahead of IDT. When it is 12:00 PM in Tel Aviv or Jerusalem during summer DST, it is 5:00 PM the same day in Hong Kong.
When does IDT apply?
IDT runs from the Friday before the last Sunday in March to the last Sunday in October. The rest of the year Israel uses IST (UTC+2) and the gap to HKT widens to 6 hours.
What are the best times for IDT-HKT business calls?
Israeli morning (9:00 to 11:00 AM IDT) maps to Hong Kong afternoon (2:00 to 4:00 PM HKT) — comfortably inside Hong Kong business hours. Israeli 8:00 AM IDT is 1:00 PM HKT and 1:00 PM IDT is 6:00 PM HKT, the practical window for live calls.
Which countries or regions use IDT?
IDT covers Israel during summer daylight saving time. Major cities include Tel Aviv, Jerusalem, Haifa, Rishon LeZion and Beersheba. The West Bank uses Palestine Daylight Time (PDT), which currently matches IDT.
Which countries or regions use HKT?
Hong Kong Time is used in the Hong Kong Special Administrative Region. The same UTC+8 offset is shared with mainland China (CST), Taiwan, Singapore (SGT), the Philippines (PHT) and Western Australia (AWST), so many East Asian and ASEAN partners read the same clock.
Pro Tips
- • HKT is 5 hours ahead of IDT — add 5 hours to Tel Aviv summer time to get Hong Kong time.
- • IDT is Israel, not India. India uses IST (UTC+5:30) — use the IST to HKT converter for Indian contacts.
- • Outside the IDT window (late October to late March), Israel is on IST (UTC+2) and the gap to HKT becomes 6 hours.
- • Israeli morning to early afternoon is the strongest overlap with Hong Kong business hours.
- • After 6:00 PM IDT, calls push past 11:00 PM Hong Kong — schedule earlier in the Israeli day.
- • Use IANA identifiers Asia/Jerusalem and Asia/Hong_Kong in calendars to handle the IDT/IST transitions automatically.