Time Difference: Lisbon vs Sydney

Lisbon (GMT+1) · Sydney (GMT+10)

Lisbon

GMT+1

--:--:--

Sydney

GMT+10

--:--:--

Sydney and Lisbon are in the same UTC offset

Time Difference

Lisbon Offset

GMT+1

Europe/Lisbon

Sydney Offset

GMT+10

Australia/Sydney

Summary

Lisbon and Sydney share the same UTC offset

Business Hours Overlap (9 AM – 6 PM)

9 hours overlap during standard business hours in both cities.

Lisbon	Sydney	Overlap
9 AM	9 AM	Business hours
10 AM	10 AM	Business hours
11 AM	11 AM	Business hours
12 PM	12 PM	Business hours
1 PM	1 PM	Business hours
2 PM	2 PM	Business hours
3 PM	3 PM	Business hours
4 PM	4 PM	Business hours
5 PM	5 PM	Business hours
6 PM	6 PM	Outside

Did You Know? — Lisbon & Sydney

Time Zone Facts: Lisbon

•Follows Lisbon timezone, central to European coordination
•Central to European business coordination
•Mid-latitude: Lisbon experiences pronounced seasons with 9–15 hours daylight variation

Time Zone Facts: Sydney

•Sydney uses AEST (UTC+10) in winter and AEDT (UTC+11) in summer — but because Australia's seasons are reversed, Sydney observes DST from October to April, the opposite of Northern Hemisphere cities.
•The Australian Securities Exchange (ASX) in Sydney opens at 10:00 AM AEST/AEDT and closes at 4:00 PM — it is the first major exchange to open each trading day globally.
•At 33.9°S in the Southern Hemisphere, Sydney has about 9.9 hours of daylight in June (its winter) and 14.4 hours in December (its summer).

Frequently Asked Questions

Lisbon and Sydney are in the same time zone offset, so there is no time difference between them.

There are 9 overlapping business hours (9 AM–6 PM) between Lisbon and Sydney. Scheduling during those hours ensures both parties are in their working day.

Lisbon and Sydney share the same UTC offset (GMT+1), so their workdays are completely synchronized — no conversion needed, identical real-time availability, and deadline alignment is automatic.

Lisbon observes GMT+1 (Europe/Lisbon). A standard 9:00 AM–6:00 PM workday in Lisbon maps to specific UTC hours — use UTC-anchored deadlines when coordinating with Lisbon-based teammates to avoid confusion from local clock changes.

Sydney observes GMT+10 (Australia/Sydney). A standard 9:00 AM–6:00 PM workday in Sydney maps to specific UTC hours — use UTC-anchored deadlines when coordinating with Sydney-based teammates to avoid confusion from local clock changes.

If {cityA} and {cityB} follow different DST schedules — common in North America–Europe, Southern Hemisphere, or no-DST pairings — the time difference shifts by 1 hour during each transition. The 1–3 weeks between the two cities' clock-change dates create a 'gap window' that frequently catches teams off guard. The difference displayed here is always live and accounts for current DST status.

The best time to call Sydney from Lisbon is during the 9-hour business-hours overlap window, when both cities are within their standard working day (9 AM–6 PM).

When it is midnight (00:00) in Lisbon, it is 12 AM in Sydney.

No — Lisbon and Sydney share the same UTC offset, so they are always on the same calendar date.

Lisbon observes Europe/Lisbon (GMT+1). For async-first teams, the most reliable approach is anchoring shared deadlines in UTC rather than any local time, and defining each member's 'availability window' — typically 9:00 AM–6:00 PM Europe/Lisbon for Lisbon. This eliminates confusion when DST transitions shift local clocks seasonally.

Sydney observes Australia/Sydney (GMT+10). For async-first teams, the most reliable approach is anchoring shared deadlines in UTC rather than any local time, and defining each member's 'availability window' — typically 9:00 AM–6:00 PM Australia/Sydney for Sydney. This eliminates confusion when DST transitions shift local clocks seasonally.

Yes — with 9 hours of overlapping business hours, Lisbon and Sydney teams can hold real-time standups and synchronous collaboration daily during that window.