Bilateral Time Zone Comparison
Sydney to London Time Difference
London is 9 to 11 hours behind Sydney. Compare live atomic clocks, discover convenient overlap hours, and manage meetings between the UK and Australia.
Quick Answer: London is exactly 10 hours behind of Sydney. When it is 12:00 PM (Noon) in Sydney, it is 2:00 AM in London. Outside standard daytime business hours.
Reference City
UTC +11Sydney
Sunday, October 11, 2026
3:21:40
Australia/SydneyTarget City
UTC +1London
Saturday, October 10, 2026
5:21:40
Europe/LondonExact Difference Summary
London is 10 hours ahead of Sydney
When it is 12:00 PM (Noon) in Sydney, it is 10 hours ahead in London.
24-Hour Time Conversion & Business Overlap
Highlighted green rows represent mutual office hours (9:00 AM – 6:00 PM).
Shared Business Hours
Syd:00:00
Lon:14:00
Syd:01:00
Lon:15:00
Syd:02:00
Lon:16:00
Syd:03:00
Lon:17:00
Syd:04:00
Lon:18:00
Syd:05:00
Lon:19:00
Syd:06:00
Lon:20:00
Syd:07:00
Lon:21:00
Syd:08:00
Lon:22:00
Syd:09:00
Lon:23:00
Syd:10:00
Lon:00:00
Syd:11:00
Lon:01:00
Syd:12:00
Lon:02:00
Syd:13:00
Lon:03:00
Syd:14:00
Lon:04:00
Syd:15:00
Lon:05:00
Syd:16:00
Lon:06:00
Syd:17:00
Lon:07:00
Syd:18:00
Lon:08:00
Syd:19:00
Lon:09:00
Syd:20:00
Lon:10:00
Syd:21:00
Lon:11:00
Syd:22:00
Lon:12:00
Syd:23:00
Lon:13:00
Hourly Comparison Table
Sydney to London Hourly Time Chart
Hour-by-hour cross-reference table for planning transatlantic calls, remote handoffs, and meetings between Sydney (Australia) and London (United Kingdom).
| Sydney Local Time | London Local Time |
|---|---|
| 8:00 AM (Sydney) | 10:00 PM (London) |
| 9:00 AM (Sydney) | 11:00 PM (London) |
| 10:00 AM (Sydney) | 12:00 AM (London) |
| 11:00 AM (Sydney) | 1:00 AM (London) |
| 12:00 PM (Sydney) | 2:00 AM (London) |
| 1:00 PM (Sydney) | 3:00 AM (London) |
| 2:00 PM (Sydney) | 4:00 AM (London) |
| 3:00 PM (Sydney) | 5:00 AM (London) |
| 4:00 PM (Sydney) | 6:00 AM (London) |
| 5:00 PM (Sydney) | 7:00 AM (London) |
| 6:00 PM (Sydney) | 8:00 AM (London) |
| 7:00 PM (Sydney) | 9:00 AM (London) |
| 8:00 PM (Sydney) | 10:00 AM (London) |
Reverse Direction
London to Sydney Time Difference
View Sydney from the perspective of London with reciprocal business overlap.
View Reciprocal Clocks
Reference City Profile
Current Time in Sydney, Australia
Live atomic clock, daylight saving schedule, sunrise and sunset in Sydney.
Explore Sydney Clocks
Target City Profile
Current Time in London, United Kingdom
Live atomic clock, daylight saving schedule, sunrise and sunset in London.
Explore London Clocks
Interconnected Corridors
Related City Time Differences
New York vs London
New York to London Difference
London vs New York
London to New York Difference
London vs Tokyo
London to Tokyo Difference
Tokyo vs London
Tokyo to London Difference
Sydney vs New York
Sydney to New York Difference
New York vs Sydney
New York to Sydney Difference
London vs Sydney
London to Sydney Difference
London vs Paris
London to Paris Difference
Transcontinental Coordination
Navigating the 9 to 11-Hour Time Gap
London is 9 to 11 hours behind Sydney. Because both nations observe daylight saving time in opposite seasons, the hour differential shifts regularly throughout the year.
Our interactive timeline keeps track of these shifting offsets automatically, highlighting the ideal end-of-day Sydney window where London is just opening for business.
Evening Sydney Syncs with Early Morning London
Compare reciprocal schedules, verify working hour alignments, and schedule with confidence.
Dual Southern and Northern Hemisphere DST Shifts
Compare reciprocal schedules, verify working hour alignments, and schedule with confidence.
Frequently Asked Questions
Common queries, time calculations, and scientific explanations
Google SERP Verified
London is 9 to 11 hours behind Sydney, shifting as both countries alternate between daylight saving periods.
Explore Global Time & Related Directories
Quick access to international capitals, timezone offsets, chronometry tools, and horology guides
Precision Horology & Global Time Tools
City Time Differences Directory
Exact hours ahead & overlap for 92+ city pairs
Coordinated Universal Time (UTC)
Canonical atomic reference standard and UTC offset zero
Multi-Zone Time Converter Hub
Convert hours across global zones and cities
Compare World Cities
Direct side-by-side time difference and overlap
United States Time Now
Live atomic clocks across all US time zones and Washington D.C.
Exact Time Digital Clock
Precision digital chronometer with seconds and atomic reference
Online Pomodoro Timer
25/5 study and deep work productivity intervals
Accurate Analog Clock
Smooth sweeping second hand and Swiss watch dial
552 Timezone Converters
Visual timeline converter across 552 global timezone pairs
Date Difference Calculator
Exact days, weeks, months & business days between dates
Date Calculator
Add or subtract days, weeks, months & business days
Golden Hour Calculator
Exact photography lighting, blue hour & civil twilight times
Sunrise & Sunset Times Hub
NOAA algorithm solar dawn and dusk times worldwide
Moon Phases & Illumination
Live lunar surface illumination % and 29.5-day synodic cycle
Interactive World Time Map
Real-time solar terminator, day/night zones & 46 live clocks
400+ Time Zones Directory
Complete canonical IANA database with live ticking clocks
Interactive Timezone Map
Live global clock bands with clickable UTC offset zones
World Cities Directory
Current local time and population across global metropolises
Today's Date Details
Day of year, ISO week, Julian day & year progress percentage
ISO Week Number Calculator
Current ISO week number, calendar quarters & weeks remaining
ISO 8601 String Parser
Parse, validate and format ISO-8601 date-time strings
Unix Timestamp Converter
Epoch seconds converter to human readable UTC & local time
Astronomy & Twilight Lab
Sunrise, sunset, golden hour & moon phase calendar
International Dialing Codes
Country calling codes & smart calling hour guide
Multi-Clock World Wall
Trading floor kiosk with Swiss analog & digital dials
Flight & Jet Lag Calculator
Travel time & circadian light adjustment protocol
Online Alarm Clock
Fullscreen bedside display with Web Audio chimes
Meeting Planner
Overlap working window across 4+ global hubs
Team Overlap Calculator
Mutual working hours matrix for remote teams
Business Days Calculator
Working days between dates & 90-day deadlines
Birthday & Age Countdown
Weeks, days & exact chronological age tracker
Atomic Clock Accuracy
NTP drift latency benchmark
Unix Timestamp Studio
Epoch seconds converter & 2038 lab
Military Time Converter & Chart
Convert 12h to 24h military time with spoken pronunciation & printable chart
Work Hours & Timesheet Calculator
Calculate weekly hours, lunch deductions, overtime pay & gross wages
Best Time to Call Calculator
Find overlapping daytime calling window between international cities
Time Zone VS Comparisons
Head-to-head differences (CST vs EST, PST vs MST, GMT vs UTC)
Daylight Saving Schedule
Global spring forward & fall back dates
Horology Learning Academy
Deep dive into UTC, leap seconds & chronometry
SEO Authority Simulator
Interactive DA vs Keyword Difficulty ranking simulator
High-Volume City Time Differences
Global Financial & Metropolitan Capitals
New York, United StatesLondon, United KingdomTokyo, JapanParis, FranceBerlin, GermanyZurich, SwitzerlandMadrid, SpainMumbai, IndiaBengaluru, IndiaHong Kong, ChinaRome, ItalyChicago, United StatesLos Angeles, United StatesSan Francisco, United StatesWashington D.C., United StatesSão Paulo, BrazilToronto, CanadaSeoul, South KoreaCairo, EgyptDubai, United Arab EmiratesSydney, AustraliaSingapore, Singapore