Open World Clock 1.3.0

The world clock Windows should have shipped with. Completely free, open source, no strings attached: no ads, no account, no telemetry.

Install

• Microsoft Store (recommended): Open World Clock on the Microsoft Store. Signed by Microsoft, runs natively on x64 and ARM64, and keeps itself updated.
• winget: winget install 9N88FR8M81BM -s msstore (the same Store build).
• Installer: Open-World-Clock-1.3.0-setup.exe, per user, no admin rights, x64.
  SHA-256 72eea47afd028fa8b04b1e3469e02fa93e7f46d6d47c2c20aa03008ae6314c9a
• Portable exe: Open-World-Clock-1.3.0-portable.exe, runs from any folder, x64.
  SHA-256 8f7761b852a1a52aea8033934ddafedf8f2b60d5e68fab570a622465fb38baea
• In your browser: the same app runs on the home page of openworldclock.com, nothing to install.

The installer and the portable exe are not code-signed yet, so SmartScreen may show "Windows protected your PC" the first time: click More info, then Run anyway. The Store build has no such prompt. Check a download with Get-FileHash <file> against the checksums above.

What you get

• Your cities side by side, with day and night at a glance
• A time zone converter: type a time, or scroll any clock, and every city follows
• A meeting planner that finds the hours when everyone is working
• A live day and night world map
• Always on top when you want it, tray icon, light and dark themes, 12 or 24 hour clock
• English, Portuguese and Spanish
• Works offline; your cities never leave your PC

Requirements: Windows 10 or 11.