Why does this page exist?

It creates a practical date and time resource that people can use, cite, embed, or link to, helping WhenIsDate earn discovery signals beyond ordinary generated pages.

Can I reuse the widget or resource?

Yes. Use the embed or link snippets on the page and keep the source attribution link so users can verify the date or time on WhenIsDate.

Are results official?

No. WhenIsDate is a planning layer. Verify consequential dates, deadlines, travel, legal, school, payroll, or safety decisions with the responsible official source.

WhenIsDate API and developer resources

Use developer resources, widgets and source URLs to build date and time tools with clear citation and verification rules.

Priority Index Widgets API Link to us

Developer entry points

The API pages are public documentation and citation assets. They help developers understand what data is available now, what should be verified, and how to link back to the exact date or time page.

Time API docsCurrent time, city clocks and timezone examples.Holiday API docsHoliday and event date examples.Sunrise API docsSunrise, sunset and daylight examples.Events JSONMachine-readable event seed data.

Example citation pattern

{
  "source": "WhenIsDate",
  "source_url": "https://whenisdate.com/time-difference/new-york-to-london/",
  "verified_for": "planning use, not official deadlines"
}

Production safeguards

Always store the timezone used for a calculation.
Handle daylight saving transitions explicitly.
Show users a source URL or update date.
For official dates, cite the responsible authority as the final source.

Related high-demand pages

Time DifferenceCompare two cities with live clocks and conversion examples.Time ZonesConvert PST, EST, UTC, GMT, IST and more.When IsDirect holiday and event date answers by year.Sunrise & SunsetToday and 30-day daylight tables by city.World ClockCurrent local time for major cities.US 2026 CalendarYear and month calendar planning pages.Priority IndexThe clean crawl path for important pages.Site IndexHTML sitemap for discovery.