Time Zones and Remote Work in Asia-Pacific: A Scheduling Guide

Published 12 July 2026 · 8 min read

Asia-Pacific contains some of the world's fastest-growing business hubs and some of the most challenging time zone combinations for global remote teams. Singapore, Tokyo, Sydney, Mumbai — each sits in a different zone, and the spread between the eastern edge of the Asia-Pacific region and the US West Coast is as wide as 17–18 hours.

If you're building or managing a team that spans this region, here's what you actually need to know.

The Asia-Pacific time zone spread

Unlike Europe, which clusters between UTC+0 and UTC+3, or the continental US, which spans only four time zones, Asia-Pacific is genuinely vast. Major business cities span roughly 11 hours of difference within the region itself:

• India (IST) — UTC+5:30. Never observes DST.
• Singapore (SGT) — UTC+8. No DST, consistent year-round.
• Hong Kong / China (HKT / CST) — UTC+8. Stable.
• Tokyo (JST) — UTC+9. No DST.
• Sydney / Melbourne (AEST/AEDT) — UTC+10 in winter, UTC+11 in summer (Australian summer, which is the northern hemisphere winter).
• Auckland (NZST/NZDT) — UTC+12 in winter, UTC+13 in summer.

One important note: India's half-hour offset (UTC+5:30) is real and often surprises people who assume all time zones fall on the hour. A 9am meeting in London is 2:30pm in Mumbai, not 2pm or 3pm.

Singapore and Tokyo: the scheduling sweet spot

For teams bridging Europe and Asia, Singapore (UTC+8) and Tokyo (UTC+9) are among the more manageable Asian cities. Neither observes DST, which means their gap relative to Europe is consistent year-round.

A London (UTC+0 in winter) team and a Singapore (UTC+8) team are 8 hours apart. London 9am is Singapore 5pm. London 10am is Singapore 6pm. The usable overlap window is roughly 9am–10am London time, which in Singapore corresponds to the last hour of the standard workday. It's tight but workable for a daily stand-up or weekly sync.

When the UK moves to BST (UTC+1) in summer, the gap narrows to 7 hours. 9am London becomes 4pm Singapore — a more comfortable slot for the Singapore side.

Tokyo is one hour further ahead (UTC+9). With London on GMT, the gap is 9 hours and the overlap essentially disappears. 9am London is 6pm Tokyo, which most people treat as outside working hours. This is a team where async-first communication is the practical default, with occasional early London or late Tokyo meetings for calls that genuinely need to be synchronous.

Sydney and Melbourne: the DST complexity

Australia observes DST, but on a southern hemisphere schedule — clocks go forward in October and back in April. This is the opposite of the northern hemisphere. The result is that Sydney's offset relative to London oscillates between 9 hours (northern hemisphere summer, Australian winter, when neither are on DST or both are on different DST variants) and 11 hours (northern hemisphere winter, Australian summer, when Sydney is on AEDT and London is on GMT).

The gap also shifts relative to Singapore and Tokyo, because those cities have no DST. A team spanning Singapore and Sydney will find their internal gap changes by an hour twice a year. For a region often assumed to be "close enough" in scheduling terms, that's a significant and often-missed complication.

The brutal reality of US–Asia overlap

If there's a candid message in this article, it's this: US and Asia time zones genuinely do not overlap during normal business hours, and no amount of scheduling cleverness changes that fundamental fact.

New York (UTC−5 in winter) and Singapore (UTC+8) are 13 hours apart. New York 9am is Singapore 10pm. Singapore 9am is New York 8pm the previous day. There is no window where both cities are simultaneously within 9am–6pm local time. You are always asking one side to meet outside business hours.

San Francisco (UTC−8 in winter) and Tokyo (UTC+9) are 17 hours apart. San Francisco 9am is Tokyo 2am the following day. The overlap window does not exist in any conventional sense.

This isn't a problem you can solve with a better tool — it's a structural challenge of geography. What you can do is manage it fairly.

Strategies that actually work across wide gaps

Teams successfully operating across US–Asia or Europe–Pacific gaps use some combination of these approaches:

• Async as default, sync as exception. Most communication happens in writing — documented in a shared space that both time zones can read and respond to in their own working hours. Video calls are reserved for decisions, relationship-building and things that genuinely don't work async.
• Recorded meetings with written summaries. If one timezone has to miss a live call, the recording plus a clear written summary of decisions and actions means they're not actually excluded — just delayed. Write the summary before you hit send on the recording link.
• Fixed rotation with explicit acknowledgement. Each team that takes the inconvenient call slot has it documented and acknowledged. "This week it's the Singapore team's evening call. Next week, New York goes early." Transparency about who's bearing the cost matters for team morale.
• Overlapping hiring to create a bridge. Some larger distributed teams deliberately hire one or two people in intermediate time zones (India at UTC+5:30, Dubai at UTC+4) whose working hours naturally bridge the gap and can relay context between the western and eastern teams.

Within Asia-Pacific: the easier conversations

If your team is primarily within Asia-Pacific, the scheduling situation is more manageable. Singapore and Tokyo are just one hour apart. Singapore and Sydney vary between 2 and 3 hours depending on DST. An 8am Sydney call is 5am or 6am Singapore — inconvenient, but not the 2am calls that US–Asia scheduling sometimes requires.

Within Asia-Pacific, it's worth investing time in a proper visual tool rather than doing the mental arithmetic, because the DST variation in Australia and New Zealand means "the same time" means something different depending on the month.

Time zone offsets in this article are based on standard UTC offsets and typical DST schedules as of publication. DST rules vary and can change. Always verify offsets for specific dates using a tool that applies current timezone rules.