世界時計
複数の都市・タイムゾーンの現在時刻を同時表示。
- New York --:--:-- America/New_York
- London --:--:-- Europe/London
- Paris --:--:-- Europe/Paris
- Dubai --:--:-- Asia/Dubai
- Mumbai --:--:-- Asia/Kolkata
- Singapore --:--:-- Asia/Singapore
- Tokyo --:--:-- Asia/Tokyo
- Sydney --:--:-- Australia/Sydney
- Los Angeles --:--:-- America/Los_Angeles
- São Paulo --:--:-- America/Sao_Paulo
- Chicago --:--:-- America/Chicago
- Berlin --:--:-- Europe/Berlin
How to use
- The clocks update automatically every second using your device's system clock — no server requests needed.
- Each card shows the city name, current time in HH:MM:SS format, today's date in that timezone, and the IANA timezone identifier.
- Use this tool to schedule meetings across time zones or check if a remote colleague is within working hours.
Related tools
よくある質問
- Is this world clock accurate?
- Yes. The times are derived from your device's system clock using the JavaScript Intl API with IANA timezone data — no network request is made.
- Does it send any data to a server?
- No. Everything runs in your browser — your current time and location are never transmitted.
- Does it work on mobile?
- Yes. Works in Safari, Chrome, and Firefox on iOS and Android.
Last updated: By jarvisbox