GMT to EET Converter
Convert time between Greenwich Mean Time (GMT) and Eastern European Time (EET)
Greenwich Mean Time (GMT)
Eastern European Time (EET)
Time Difference
Eastern European Time (EET) is 0 hours ahead of Greenwich Mean Time (GMT)
Select Date
Select Time
Quick Reference
| GMT | EET |
|---|---|
| 03:00 | 05:00 |
| 05:00 | 07:00 |
| 07:00 | 09:00 |
| 09:00 | 11:00 |
| 11:00 | 13:00 |
| 13:00 | 15:00 |
| 15:00 | 17:00 |
| 17:00 | 19:00 |
| 19:00 | 21:00 |
| 21:00 | 23:00 |
| 23:00 | 01:00 |
| 01:00 | 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 GMT to EET Time Conversion
Converting time between Greenwich Mean Time (GMT) and Eastern European Time (EET) is important for coordinating activities between the UK and Eastern Europe. GMT is UTC+0 (used in the UK during winter months), while EET is UTC+2 — making Eastern Europe consistently 2 hours ahead of GMT. During summer, both regions shift clocks simultaneously, keeping the 2-hour gap unchanged.
This time zone converter uses the IANA timezone database to ensure accurate calculations, automatically handling daylight saving time transitions in both regions. Whether you're scheduling business meetings between London and Athens, planning travel to Greece or Romania, or managing remote teams across this boundary, our converter provides reliable and up-to-date results.
Common Use Cases for GMT to EET Conversion
Business & Work
- Scheduling meetings between UK-based and Eastern European teams
- Coordinating project deadlines across GMT and EET offices
- Planning international conference calls and webinars for UK-EU participants
Personal & Travel
- Planning travel from the UK to Greece, Cyprus, Romania, or Bulgaria
- Coordinating with family and friends in Eastern European countries
- Scheduling virtual events and video calls across the 2-hour time difference
Time Zone Information
Greenwich Mean Time (GMT)
- UTC Offset: UTC+0 (UTC+1 BST during DST)
- IANA Timezone: Europe/London
- Daylight Saving: Last Sunday in March to Last Sunday in October
- Major Cities: London, Manchester, Birmingham, Edinburgh, Cardiff
- Coverage: United Kingdom during standard time (winter months); also used in Ireland, Iceland, and parts of West Africa year-round
Eastern European Time (EET)
- UTC Offset: UTC+2 (UTC+3 EEST during DST)
- IANA Timezone: Europe/Athens
- Daylight Saving: Last Sunday in March to Last Sunday in October
- Major Cities: Athens, Nicosia, Bucharest, Sofia, Helsinki
- Coverage: Eastern Europe and parts of the Middle East including Greece, Cyprus, Romania, Bulgaria, and Finland
Quick Reference: GMT to EET
Remember: EET is always 2 hours ahead of GMT year-round
Frequently Asked Questions
What is the time difference between GMT and EET?
Greenwich Mean Time (GMT) is UTC+0, while Eastern European Time (EET) is UTC+2 in winter and UTC+3 (EEST) in summer. Because both regions observe daylight saving time on the same dates, EET/EEST is always 2 hours ahead of GMT/BST year-round. When it's 10:00 AM in London on GMT, it's 12:00 PM in Athens.
When does GMT apply in the UK?
GMT (UTC+0) is the standard time used in the United Kingdom from the last Sunday in October to the last Sunday in March. During summer, the UK switches to British Summer Time (BST, UTC+1). GMT is also used year-round in Ireland, Iceland, and several West African countries.
Does the time difference between GMT and EET change throughout the year?
No — the difference remains a consistent 2 hours throughout the year. Both the UK and EET countries switch to and from daylight saving time on the same weekend (last Sunday in March and last Sunday in October), so the offset stays the same whether it's winter or summer.
What are the best times for GMT to EET business calls?
The ideal overlap window for UK-Eastern Europe calls is 9:00 AM–3:00 PM GMT (11:00 AM–5:00 PM EET). Both regions are within standard working hours during this window. Avoid scheduling after 3:00 PM GMT as it nears the end of the Eastern European workday.
Which countries use EET (Eastern European Time)?
EET (UTC+2) is used by Greece, Cyprus, Romania, Bulgaria, Finland, Estonia, Latvia, Lithuania, and parts of Ukraine. During summer these countries observe EEST (UTC+3). Some countries like Egypt and South Africa also use UTC+2 but without observing daylight saving time.
Is GMT the same as UTC?
GMT and UTC both represent the zero-hour reference for world time and are functionally the same for everyday scheduling purposes. Technically, UTC is the modern scientific standard while GMT is a time zone. For timezone conversion purposes they can be treated as equivalent at UTC+0.
Pro Tips
- • EET is always 2 hours ahead of GMT — if it's 9:00 AM in London, it's 11:00 AM in Athens or Bucharest.
- • Both regions change clocks on the same weekend, so the 2-hour gap is constant all year.
- • The best GMT-EET meeting window is 9:00 AM–2:00 PM GMT (11:00 AM–4:00 PM EET) for comfortable overlap on both sides.
- • GMT applies in the UK only from late October to late March — the rest of the year the UK is on BST (UTC+1).
- • Athens, Nicosia, Bucharest, Sofia, and Helsinki all share the EET/EEST offset, making this conversion useful for a wide range of Eastern European destinations.
- • For early meetings, 8:00 AM GMT (10:00 AM EET) is the earliest comfortable slot that keeps both sides within reasonable hours.