Three numbers. The ones that decide the meeting.
When the world meets at work.
Read the day in both zones.
If it's this in Hagåtña, it's that in Athens.
When it's 8:00 am in Hagåtña, it's 1:00 am in Athens — late night there, the same day.
When it's 10:00 am in Hagåtña, it's 3:00 am in Athens — late night there, the same day.
When it's 12:00 pm in Hagåtña, it's 5:00 am in Athens — morning there, the same day.
When it's 3:00 pm in Hagåtña, it's 8:00 am in Athens — morning there, the same day.
When it's 5:00 pm in Hagåtña, it's 10:00 am in Athens — late morning there, the same day.
When it's 9:00 pm in Hagåtña, it's 2:00 pm in Athens — afternoon there, the same day.
Crossing the border. Money, language, plugs.
Money changes hands at the border: Hagåtña uses the USD ($) and Athens uses the EUR (€). Language shifts too — Chamorro in Hagåtña, Greek in Athens. Cars drive on the right in both, so rentals feel familiar.
- Country
- Guam
- Capital
- Hagåtña
- Currency
- United States dollar (USD · $)
- Language
- Chamorro, English, Spanish
- Calling code
- +1671
- Drives on
- Right
- Country
- Greece
- Capital
- Athens
- Currency
- euro (EUR · €)
- Language
- Greek
- Calling code
- +30
- Drives on
- Right
Quick answers. Before you book the call.
What's the time difference between Hagåtña and Athens?
Hagåtña is 7 hours behind Athens. Hagåtña runs on GMT+10 and Athens on GMT+3. The gap can shift by an hour when either side enters or leaves daylight saving — the live clocks above always reflect the current offset.
When it's 10 am in Hagåtña, what time is it in Athens?
10:00 am in Hagåtña is 3:00 am in Athens on the same day — late night there. The same shift applies to any hour; the quick-conversion cards and the 24-hour table above cover the full day.
When it's 3 pm in Hagåtña, what time is it in Athens?
3:00 pm in Hagåtña is 8:00 am in Athens on the same day — morning there. The same shift applies to any hour; the quick-conversion cards and the 24-hour table above cover the full day.
When's the best time to schedule a meeting?
There are 1 hour where both cities are inside a 09:00–17:00 workday. Aim for the middle of that window so neither side is starting or closing out.
Does daylight saving time change the difference?
Yes, if either city observes DST. When one side shifts and the other doesn't, the gap changes by one hour. The DST badges under each clock show whether each zone is currently shifted and when the next transition lands.
How far is Hagåtña from Athens?
About 11,628 km as the crow flies (great-circle distance). A non-stop commercial flight cruises that in roughly 14h 11m, not counting airport time, winds, or routing around restricted airspace.
Can I send this meeting time as a calendar invite?
Yes. Pick a time on the slider above, open the meeting card, customize the title and duration, then download the .ics file. It imports cleanly into Google Calendar, Outlook, and Apple Calendar with the correct timezone attached.
What currency do Hagåtña and Athens use?
Hagåtña uses the United States dollar (USD, $); Athens uses the euro (EUR, €). Check the live rate before transferring money or paying with a card abroad — most banks add a 1–3 % FX margin on top of the mid-market rate.
How do I call Hagåtña from Athens?
Dial the international prefix used by your carrier (often 00), then +1671, then the local number — drop any leading zero of the city or mobile code. For free calls, WhatsApp, Signal, and FaceTime work over Wi-Fi regardless of country code.
What language is spoken in Hagåtña and Athens?
Hagåtña primarily speaks Chamorro, English, Spanish; Athens speaks Greek. English is widely used in business contexts in major cities of both, but written contracts may need translation.
Do Hagåtña and Athens drive on the same side of the road?
Yes — both drive on the right. Rental cars feel identical between the two.