WClock世界時計
都市の時刻を比較し、時差を考慮して予定を立てましょう。
現在地の時刻
都合のよい時間を探す
昼夜の表示で、電話に適した時間を選べます。
端末の時計とブラウザーのタイムゾーン情報を使用し、夏時間にも対応します。都市を選ぶとメイン表示に切り替わり、リンクを共有できます。
Compare local times before planning a call
A world clock shows the same moment in different cities. WClock lets you keep the locations you use together, so you can compare working hours, check the local date, and see when a call would fall overnight.
How to use this tool
- Search for a city or enter an IANA time zone such as America/New_York, then add it to your clocks.
- Select a city to feature its time on the main display. Add other locations to compare their dates and time differences.
- Move the meeting planner through the next 24 hours, then choose Back to live to return to the current time.
A practical example
For a London–Mumbai call, add both cities and move the planner until the displayed hours suit both people. Check again around seasonal clock changes rather than assuming the difference stays constant.
Common questions
Why does the time difference between cities change?
Some locations change their clocks for daylight saving time, and they may change on different dates. WClock formats city times using your browser’s time zone data; keep your browser and operating system updated.
Is the world clock synchronized independently?
The displayed time comes from your device. WClock does not independently measure clock error or contact an atomic time server. Enable automatic date and time on your device if its clock is incorrect.