Cardiff to Sydney Time Converter
Sydney is +9h ahead of Cardiff
Quick converter
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FROM
Cardiff
United Kingdom
UTC+01:00
TO
Sydney
Australia
UTC+10:00
Date-aware conversion
Convert a specific date and time
Result
Mon, Jun 15, 2026 15:12
Cardiff: Monday, June 15, 2026 6:12 AM GMT+1 to Sydney: Monday, June 15, 2026 3:12 PM GMT+10.
Sydney is 9h ahead of Cardiff on this date
24-Hour Comparison
Every hour in Cardiff and the corresponding time in Sydney. Green rows indicate business hours in Sydney.
Time zones
Cardiff uses Europe/London (GMT+1) and Sydney uses Australia/Sydney (GMT+10). The difference can shift during daylight saving changes, so checking the exact date matters.
Best use
Use the green rows to spot normal working hours in Sydney. For teams across more cities, open the meeting planner and compare up to five locations.
Plan a meetingMeeting guidance
Best time for Cardiff and Sydney
There is no full business-hour overlap in the 24-hour table, so use a custom time or rotate meeting times for fairness. For important calls, check the meeting date because the offset can change when either location enters or leaves daylight saving time.
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City context
About these cities
About Cardiff
Cardiff is located in United Kingdom (Europe). It uses the Europe/London timezone with a standard offset of UTC+01:00. It observes DST, switching between GMT and BST. See the full Cardiff time page for live clock and planning details.
About Sydney
Sydney is located in Australia (Oceania). It uses the Australia/Sydney timezone with a standard offset of UTC+10:00. It observes DST, switching between AEST and AEDT. See the full Sydney time page for live clock and planning details.
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