世界の都市別現在時刻
世界数百都市の正確な現地時間、タイムゾーン、夏時間情報を検索できます。
Current time in world cities
| City | Country | Local time | Date | UTC offset | Day |
|---|
Offsets are resolved for the current instant, so daylight saving is always reflected. Time zone boundaries follow political lines: some neighboring cities share a zone, others differ by 30 or 45 minutes.
仕組みと計算ルール
- The page embeds a curated list of major world cities, each mapped to its real IANA zone, never a hardcoded offset.
- As you type, the list filters on city, country and zone name; matching rows show live local time, date, and the UTC offset resolved for the current instant.
- The "Day" column compares each city’s calendar date with your own zone’s, so cities already on tomorrow (or still on yesterday) are visible at a glance.
知っておくと便利なポイント
- The list is deliberately curated, not exhaustive; for any place worldwide, the World Clock accepts full IANA identifiers.
- Some cities share a zone (Boston and New York; Berlin and Frankfurt) and always show identical times; others just kilometers apart can differ by 30 minutes.
- All computation happens in your browser; the city list and times never leave the page.
関連ツール
よくある質問
Which cities are included?
A curated list of major world cities mapped to their IANA zones. It is intentionally concise; for any place worldwide, the World Clock accepts full IANA identifiers.
Why do two nearby cities sometimes show the same time?
Time zone boundaries follow political lines, not geometry. Some neighboring cities genuinely share a zone; others differ by 30 minutes. The list reflects the real IANA mapping.
Is daylight saving reflected?
Yes, each city offset is resolved for the current instant, so cities currently on DST show their active summer offset, updated automatically.