About MyTimezonePlanner
MyTimezonePlanner is a free, browser-based meeting planner built to do one thing well: show you when remote team members in different cities are all within working hours at the same time. You add up to six cities, pick a date, and the tool renders a colour-coded 24-hour timeline for each location side by side. A shared overlap bar at the top highlights the exact windows where everyone is available — no spreadsheets, no mental arithmetic.
Nothing you enter is sent to any server. The entire tool runs in your browser. City selections, dates and the selected meeting time are encoded in the URL so you can share a link directly with colleagues — anyone who opens it sees the same configuration you set up.
How the time zone calculation works
All time zone calculations use the browser's built-in Intl API, which is backed by the IANA tz database — the authoritative, publicly maintained database of every time zone and daylight saving rule on earth. This means the tool doesn't rely on a static offset table that might be out of date. When you select a date, it applies the correct UTC offset for that specific date, including any daylight saving adjustments that apply to each city.
If any city in your selection is within two weeks of a daylight saving transition, a warning banner appears so you can double-check before locking in a time. Transitions in different countries happen on different dates, which is one of the most common sources of scheduling errors in global teams.
Who it's built for
The people who use this tool most regularly tend to be:
- Project managers and team leads coordinating distributed teams across continents
- Founders and executives scheduling calls with investors, partners or customers in other regions
- Operations and HR teams managing people spread across multiple time zones
- Freelancers and contractors working with clients in different countries
- Anyone who has ever sent a meeting invite and had someone reply asking what time it is for them
The tool is deliberately simple. There's no account to create, no configuration, and nothing to install. You open it and start adding cities.
Free and Pro
The core planner is free and always will be. It runs entirely on ad revenue, which keeps it accessible without requiring a subscription. If you'd prefer an ad-free experience with additional features — saved named meetings and iCal export — there is an optional Pro plan available for a few dollars a month. The free version has no feature limitations beyond ads.
Who we are
MyTimezonePlanner is built and maintained by Rose Venture Labs, a New Zealand-based venture builder focused on creating genuinely useful, well-crafted digital tools. We build things we would want to use ourselves — fast to load, honest about what they do, and free from unnecessary friction.
If you have feedback, a bug to report or a feature you'd like to see, we'd genuinely like to hear from you via the contact page.