What macOS gives you out of the box

The menu bar clock

The clock in the top-right corner of your Mac shows exactly one timezone: yours. You can change its format in System Settings, but you cannot add a second city to it. For anything beyond local time, Apple points you to widgets.

World Clock widgets

Since macOS Sonoma you can place Clock widgets in Notification Center or directly on the desktop. The World Clock widget shows up to four cities with analog faces, and the single-city widget shows one. This is genuinely useful — and free — but it has three practical limits:

  • It's not glanceable while you work. Desktop widgets hide behind your windows, and Notification Center takes a swipe or click to open. The information isn't where your eyes already are — the menu bar.
  • It shows times, not availability. The widget tells you it's 17:40 in Berlin. Whether 17:40 means "still working", "wrapping up", or "gone for the day" is math you still do in your head, for every city, every time.
  • No future planning. Widgets show now. "What time is it in Singapore next Tuesday at 3pm my time?" needs a different tool.

Calendar's secondary timezone

Both macOS Calendar and Google Calendar can display a second timezone column in week view. If your whole timezone problem is one other region and mostly about meetings, turn this on — it may be all you need. It stops helping the moment you juggle three or more regions or need to think outside calendar view.

Siri and Spotlight

Typing "time in Tokyo" into Spotlight gives a correct one-off answer. Fine for occasional lookups; tedious as a daily workflow, and again — a raw time, not an answer to "can I ping them now?".

Where the built-in options fall short

Notice the pattern: everything Apple ships answers "what time is it there?" The question you actually have is "can I talk to this person right now — and if not, when?" Those are different questions. Answering the second one requires knowing each person's working hours and doing offset math, which is precisely the mental load you want to get rid of.

What a dedicated menu bar world clock adds

This is the job GlobalTimeZones was built for. It lives in the menu bar — where your eyes already go for the time — and answers the availability question directly:

  • Color-coded availability, not raw times. Every city gets one of four statuses — working (green), near start or end of day (orange), off hours (gray), sleeping (red) — based on working hours you define. You read a dot, not a number.
  • A ±24-hour planning slider with 15-minute steps. Drag to "tomorrow 9:30 my time" and watch every city's time and status update live. Quarter-hour precision keeps half-hour offsets like India (UTC+5:30) and Nepal (UTC+5:45) exact — no rounding surprises.
  • 400+ cities, searchable by country and alias. Type "Tanzania" and get Dar es Salaam.
  • Native SwiftUI, fully on-device. No Electron, no accounts, no data leaving your Mac.

It's a one-time $4.99 purchase with free lifetime updates — no subscription. There's an interactive demo on the homepage so you can try the slider and statuses before buying.

Bottom line

  • You check another timezone a couple of times a week: the built-in World Clock widget or Spotlight is enough. Don't buy anything.
  • One other region, mostly meetings: turn on Calendar's secondary timezone.
  • You coordinate with teammates, clients, or family across time zones daily: a dedicated menu bar app pays for itself immediately — availability at a glance is the feature the built-ins simply don't have. That's GlobalTimeZones.

For the scheduling side of the problem, see our guide on how to schedule meetings across time zones.