12pm in Seoul is 12am in Sydney

When it’s 9am in Seoul, it’s 8pm in Sydney. Sydney is 13 hours behind from Seoul, placing South Korea and Canada far enough apart to require deliberate scheduling. The best window for live calls is late afternoon in Seoul when Sydney is opening its workday. Corporate travelers and deal-makers on the Seoul-Sydney route schedule calls during the shared business-hours window to avoid after-hours meetings on either side. Financial and trade connections between South Korea and Canada concentrate activity in that overlap window. The wide gap means one city is often asleep while the other is fully active, so asynchronous tools carry most of the daily communication load. Sydney observes daylight saving time while Seoul does not, so the offset shrinks by one hour when Canada clocks spring forward. Keeping a timezone converter bookmarked helps both sides quickly verify the current time in Sydney before sending a calendar invite.