The Challenge of Global Scheduling
In today's remote-first business environment, consultants and freelancers frequently work with international clients. Scheduling a simple video call can turn into a frustrating math problem involving Daylight Saving Time (DST), GMT offsets, and calendar confusion. Sending a calendar invite for the wrong day or time looks unprofessional and costs you money.
Why Not Just Add Hours?
You might think you can just look up the time difference (e.g., "London is 5 hours ahead of New York"). However, this approach frequently fails because:
- Asymmetric Daylight Saving Time: Different countries start and end Daylight Saving Time on different dates. For several weeks in the spring and autumn, the time gap between the US and Europe shifts by an hour.
- Non-Observing Regions: Many regions (like Arizona in the US, or entire countries like Japan and India) do not observe Daylight Saving Time at all.
- Half-Hour Offsets: Certain time zones, such as India Standard Time (IST) or Australian Central Standard Time (ACST), operate on 30-minute or 45-minute offsets, complicating mental math.
Best Practices for International Communication
- Always specify the time zone: Never say "Let's meet at 10 AM." Say "Let's meet at 10 AM Eastern Time (ET)."
- Use tools over math: Use a tool like this calculator to convert the time, and offer the client two options in their local time. "Does 3 PM or 5 PM London time work for you?" This reduces friction and provides an excellent client experience.