The Global Scheduling Problem
Global teams waste an estimated 30–60 minutes per week per person just figuring out meeting times. Multiply that across a 20-person international team and you are losing nearly 400 person-hours a month—the equivalent of two full-time employees doing nothing but scheduling. The root cause is almost always the same: someone does the timezone math in their head, gets it wrong, and everyone scrambles.
The solution is not smarter mental arithmetic—it is better process. This guide gives you a repeatable, copy-paste playbook for scheduling meetings with teams in the three most common international corridors: India, Europe, and Asia-Pacific. Each section includes the best overlap windows, common pitfalls, and a message template you can send immediately.
All time windows in this guide are available as live converters on TimeMeet. Just click the link, set your date, and the tool handles DST and offset adjustments automatically.
Scheduling with Teams in India (IST, UTC+5:30)
India Standard Time is famously offset by 30 minutes—UTC+5:30—making it slightly awkward to calculate manually. No daylight saving time adjustments are required; IST is constant year-round, which is actually a relief for schedulers.
Best windows by origin timezone: US East Coast (ET): 8:00–9:30 AM ET = 6:30–8:00 PM IST. This is the most common 'stretch' window—India works late, US starts early. US West Coast (PT): 7:00–9:00 AM PT = 8:30–10:30 PM IST—very hard on the India side; rotate frequently. UK (GMT/BST): 9:00 AM–12:00 PM GMT = 2:30–5:30 PM IST—the gold standard overlap, both teams in core hours. Europe (CET): 9:00–11:00 AM CET = 1:30–3:30 PM IST—comfortable for both.
Common pitfall: forgetting that Indian public holidays include Holi, Diwali, and numerous regional observances that vary by state. A Mumbai developer and a Bangalore developer may have different holidays. Always check with your specific team members. Use our [London to Mumbai converter](/convert/london-to-mumbai) or check [Mumbai's current time](/city/mumbai) to plan accurately.
Scheduling with Teams in Europe (CET/CEST, GMT/BST)
Europe is relatively compact timezone-wise but tricky because of DST transitions. Western Europe (UK, Portugal) runs GMT in winter and BST (UTC+1) in summer. Central Europe (France, Germany, Spain, Italy, Netherlands) runs CET (UTC+1) in winter and CEST (UTC+2) in summer. Eastern Europe (Poland, Romania, Finland) is one hour further ahead. The US-to-Europe gap narrows by one hour in March when the US springs forward, and widens again in November.
Best windows: US East Coast to UK: 9 AM–1 PM ET (winter: 2–6 PM GMT; summer: 2–6 PM BST). US East Coast to Central Europe: 9–11 AM ET (winter: 3–5 PM CET; summer: 3–5 PM CEST). US West Coast to UK: 8–10 AM PT = 4–6 PM GMT/BST—tight but manageable for a standing call. Asia-Pacific to Europe: 3–5 PM SGT/JST = 8–10 AM CET—works well for a morning Europe / afternoon Asia call.
Key pitfall: the three-week gap in March when the US has already sprung forward but Europe has not yet changed. During this window, the US-to-Europe gap is one hour narrower than usual. If you have a standing weekly call and someone misses it in mid-March, this is almost certainly why. Use TimeMeet to [check current New York to London time](/convert/new-york-to-london) on the actual meeting date rather than relying on a fixed offset.
Scheduling with Teams in Asia-Pacific (JST, SGT, AEST)
Asia-Pacific spans a wide range of timezones: Japan and Korea (UTC+9), China, Singapore, Hong Kong, Malaysia, Taiwan (UTC+8), Southeast Asia (UTC+7), India (UTC+5:30), and Australia (UTC+8 to UTC+11 depending on state and DST). Within the region, meetings are relatively easy. The challenge is connecting with Europe or the Americas.
Best windows for US-to-Asia calls: US East Coast to Singapore/Hong Kong: 8 AM ET = 9 PM SGT—evening Singapore, doable as a standing call. US West Coast to Tokyo: 7 AM PT = 11 PM JST—very late for Japan; rotate or use async. US West Coast to Sydney: 8 AM PT = 3 AM AEDT next day (summer) or 1 AM AEST—virtually impossible without compromise. For Australia calls, consider 5–6 PM Sydney = 2–3 AM PT—early morning US works better than late Japan.
Best windows for Europe-to-Asia calls: London to Singapore: 9 AM GMT = 5 PM SGT—both in core hours, excellent overlap. Check our [London to Singapore converter](/convert/london-to-singapore). Berlin to Tokyo: 9 AM CET = 5 PM JST—tight but workable; avoid Fridays when Tokyo offices wind down early. Paris to Sydney: 9 AM CET = 6–7 PM AEST—solid afternoon Sydney / morning Paris window.
The Three-Timezone Meeting: Making It Work
The hardest scheduling scenario is a meeting that spans three or more distant regions—say, San Francisco, London, and Singapore all on one call. There is no time that is perfect for everyone. The goal is to find the least-bad option and rotate it fairly.
Step 1: Open TimeMeet and add all three cities. The planner will show you every hour color-coded by availability. Look for any green slots (everyone in core hours). If none exist, identify the purple slots (some available) that minimize total inconvenience.
Step 2: Calculate the 'pain score' for each candidate slot. Assign 0 points for core hours (9 AM–6 PM), 1 point for early/late (7–9 AM or 6–9 PM), and 3 points for nighttime (9 PM–7 AM). Choose the slot with the lowest total pain score across all participants.
Step 3: Rotate the slot each quarter so that no single region always carries the highest score. Document the rotation publicly. Even if the math never perfectly equalizes, the transparency of the process builds trust.
Ready-to-Use Scheduling Message Templates
Template 1 — Proposing a time: 'Hi [Name], I'd like to schedule a 30-minute call to discuss [topic]. Based on our timezones ([Your City] and [Their City]), I suggest [Day] at [Time Your City] / [Time Their City]. Does that work? If not, I'm flexible on [alternative day]. I'll send a calendar invite with a video link once confirmed.'
Template 2 — Recurring meeting rotation notice: 'Hi team, our weekly sync is currently at [time], which is consistently late for our [region] colleagues. Starting next month, we'll rotate the time quarterly: Q3 favors Asia-Pacific (meeting at [new time]), Q4 returns to the current slot. Full schedule is in [link]. Please update your calendars.'
Template 3 — DST warning: 'Heads up: [Country] clocks change on [date]. Our standing meeting will shift by one hour for those outside [region]. The new time in your timezone will be [adjusted time]. TimeMeet link to verify: [timemeet.io link].' Use these templates as a starting point and customize for your team's tone.