Doubletime

A macOS menu bar clock that shows two time zones side by side.

One cell per zone, plus the primary minute. A thin ring on the secondary cell encodes the sub-hour offset, so half-hour zones like Kolkata read correctly.

The name and the itch both come from One Clock.

Features

• Any IANA time zone in either slot; the primary can follow the system zone.
• Labels up to five characters, derived from the zone or typed yourself.
• 12-hour or 24-hour digits; 12-hour mode tints each cell by its own AM or PM.
• Arc or segmented indicator.
• Optional blinking colon.
• Hover the clock to roll the trailing minute to the secondary zone's local time — only when the zones sit at a sub-hour offset (the arc/segment pairs).
• Settings previews rendered from the same raster as the real status item.

Building

Open doubletime.xcodeproj, set your signing team, and run. Targets macOS 26.4; SwiftUI, no dependencies.