Business Hours Across Time Zones
Business hours are local and cultural, not only mathematical. A time can be inside 9:00 to 5:00 and still be poor for a customer call if it lands during lunch, commute time, or the end of the day.
Updated May 20, 2026 · 6 min read
Key takeaways
- - Use 10:00 AM to 4:00 PM as a practical business core.
- - Plan regional support handoffs with a short overlap window.
- - Favor recipient-friendly times for sales and interviews.
Use a core window first
For international planning, 10:00 AM to 4:00 PM local time is a safer core window than the full 9:00 AM to 5:00 PM day.
This leaves room for school runs, commutes, lunch, and local variations in work culture.
Support coverage needs handoffs
If support spans regions, plan handoff times explicitly. The best schedule is one where the outgoing team has enough overlap to brief the incoming team.
A short overlap can be more valuable than forcing everyone into the same long meeting.
Sales and interviews need recipient-friendly times
For external calls, favor the recipient's mid-morning or early afternoon. People are more likely to show up prepared and less likely to be interrupted.
For interviews, include the time zone in every message and calendar invite.