Evidence, coverage and developer tools — outside the calculator flow.

Research datasets

Download working-hours overlap, weekend, DST and supporting methodology files.

• CSV and JSON formats
• Method and update date
• Known limitations

International coverage

Browse supported countries, cities, language routes and named IANA zones.

• Country workweek defaults
• City and zone directory
• Localization status

Events & scheduling

Move from a proposed time to voting, booking and one local-time event page.

• Meeting polls
• Booking links
• Event announcer

Developer API

Use conversion, DST, holiday, business-day, overlap and fairness endpoints.

• OpenAPI reference
• Batch workflows
• Explainable responses

Visual Widget Builder

Create a digital or analog multi-city clock with a live preview and embed code.

• 12/24 hour
• Date, DST and sun
• Privacy-friendly iframe

Global reports

Read DST, remote-work and international scheduling reports with sources.

• Update history
• Downloadable evidence
• No repetitive city filler

Age

Age, birthday, birth-year and comparison calculators.

Date Calculators

Add, subtract and compare dates.

Time Calculators

Elapsed time, durations and clock arithmetic.

Working Days

Business-day counting and deadlines.

Countdown

Countdowns and time remaining.

Time Zones

DST-aware conversion and abbreviations.

World Clock

Saved cities and full-screen clocks.

Meeting Planner

Overlap, fairness, polls and booking.

Calendar Tools

Weeks, weekdays and recurring patterns.

Timestamp & Formats

Unix, ISO and technical date formats.

Travel & Stay

Flights, jet lag and travel-day planning.

Special Dates

Birthdays, anniversaries and milestones.

Timers & Productivity

Timers, intervals and focus sessions.

Life & Planning

Planning estimates with clear notices.

Payroll & Shifts

Hours, overtime and schedules.

Sun, Moon & Holidays

Daylight, lunar and published holiday data.

Developer Tools

Cron and date-time developer utilities.