时间

日期、年龄与时区，包括 IST、JST 和 CET。

• Age calculatorCompleted years, leftover months and days. Useful for exams, visas, and Aadhaar-style forms.
• Time zone converterPick a wall-clock date and time, then From and To zones. Every common IANA zone is listed with UTC/GMT offsets and abbreviations (CET, EET, IST…). DST is applied automatically.
• Date difference calculatorSubtract one civil date from another. Business days skip Saturday and Sunday (not regional holidays).
• What timezone is this city in?Pick a major city to see its IANA zone, current UTC/GMT offset, common abbreviations (CET, EEST, IST…), country, and an example of the current local time. Then convert times with the Time zone converter.