HST to EET Converter
Convert time between Hawaii-Aleutian Standard Time (HST) and Eastern European Time (EET)
Hawaii-Aleutian Standard Time (HST)
Eastern European Time (EET)
Time Difference
Eastern European Time (EET) is 0 hours ahead of Hawaii-Aleutian Standard Time (HST)
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Quick Reference
| HST | EET |
|---|---|
| 16:00 | 04:00 |
| 18:00 | 06:00 |
| 20:00 | 08:00 |
| 22:00 | 10:00 |
| 00:00 | 12:00 |
| 02:00 | 14:00 |
| 04:00 | 16:00 |
| 06:00 | 18:00 |
| 08:00 | 20:00 |
| 10:00 | 22:00 |
| 12:00 | 00:00 |
| 14:00 | 02:00 |
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
Related Time Zone Conversions
About HST to EET Time Conversion
Converting time between Hawaii-Aleutian Standard Time (HST) and Eastern European Time (EET) involves a significant 12-hour difference. HST is UTC-10, while EET is UTC+2, making Eastern Europe exactly half a day ahead of Hawaii during winter months.
Hawaii does not observe daylight saving time, staying at UTC-10 year-round. However, Eastern Europe switches to EEST (UTC+3) from late March to late October, increasing the difference to 13 hours during summer. This seasonal change is important to track when scheduling.
Common Use Cases for HST to EET Conversion
Business & Work
- International shipping and logistics connecting Pacific routes to Eastern Europe
- Global IT companies with distributed teams across Hawaii and Eastern Europe
- Tourism operators coordinating Hawaii-Eastern Europe travel packages
- Multinational corporations with offices spanning these distant regions
Personal & Travel
- Coordinating with family and friends between Hawaii and Eastern Europe
- Planning travel itineraries involving Hawaii and EET countries
- Scheduling virtual meetings across the 12-hour time difference
- Managing international relationships spanning Pacific to Eastern Europe
Time Zone Information
Hawaii-Aleutian Standard Time (HST)
- UTC Offset: UTC-10
- IANA Timezone: Pacific/Honolulu
- Daylight Saving: None - Hawaii does not observe daylight saving time
- Major Cities: Honolulu, Hilo, Kailua, Pearl City, Waipahu
- Coverage: Hawaii and the Aleutian Islands of Alaska
Eastern European Time (EET)
- UTC Offset: UTC+2
- IANA Timezone: Europe/Kiev
- Daylight Saving: EEST (UTC+3) from late March to late October
- Major Cities: Kyiv, Athens, Bucharest, Sofia, Helsinki, Tallinn, Riga, Vilnius
- Coverage: Eastern Europe during winter/standard time
Quick Reference: HST to EET
EET is 12 hours ahead of HST during winter (late October to late March). During summer when EEST is active, the difference increases to 13 hours. Hawaii does not observe daylight saving time.
Frequently Asked Questions
What is the time difference between HST and EET?
Hawaii-Aleutian Standard Time (HST) is UTC-10, while Eastern European Time (EET) is UTC+2. This means EET is 12 hours ahead of HST. When it's 12:00 PM (noon) in Honolulu, it's 12:00 AM (midnight) in Kyiv or Athens.
Does the time difference change during the year?
Yes, the difference changes when Eastern Europe switches to daylight saving time. Hawaii does not observe DST, staying at UTC-10 year-round. During EET (winter, late October to late March), the difference is 12 hours. During EEST (summer), the difference increases to 13 hours as Eastern Europe moves to UTC+3.
What are the best times for calls between Hawaii and Eastern Europe?
The 12-hour difference (exactly half a day) means when it's morning in one location, it's evening in the other. Early morning in Hawaii (6-8 AM HST) corresponds to evening in Eastern Europe (6-8 PM EET). Late evening in Hawaii (8-10 PM HST) aligns with morning in Eastern Europe (8-10 AM EET).
Which countries use EET?
Eastern European Time (EET) is used by countries including Ukraine, Greece, Romania, Bulgaria, Finland, Estonia, Latvia, Lithuania, Moldova, and parts of Turkey during winter months. During summer, these countries switch to EEST (UTC+3), except Turkey which stays on a fixed UTC+3.
How does the date change work with a 12-hour difference?
With exactly 12 hours difference, noon in one location equals midnight in the other. After 12:00 PM HST, it becomes the next calendar day in EET. For example, Monday 2:00 PM in Honolulu is Tuesday 2:00 AM in Kyiv. The date shift occurs at noon Hawaii time.
What industries need HST to EET conversion?
This conversion is relevant for: international shipping and logistics connecting Pacific routes to Eastern Europe, global IT companies with distributed teams, tourism operators coordinating Hawaii-Eastern Europe travel, academic research collaborations, and multinational corporations with offices spanning these regions.
Pro Tips
- • The 12-hour difference creates a perfect day/night flip - use this to your advantage for follow-the-sun workflows.
- • Morning meetings in Hawaii (7-9 AM HST) align with evening in EET (7-9 PM) - both sides can be reasonably alert.
- • Remember the difference increases to 13 hours during EEST (late March to late October) when Eastern Europe uses summer time.
- • Noon HST equals midnight EET - a simple reference point for quick mental calculations.
- • For urgent matters, asynchronous communication works well since you can hand off work at end of day in one region to start of day in the other.
- • Always confirm whether EET or EEST is active when scheduling, especially around the March and October transition dates.
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