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Countdown

World Wide Web — 40th Anniversary

Monday, March 12, 2029 · 858 days away

EuropeAnniversaryscheduled

Countdown

World Wide Web — 40th Anniversary

857
Days
04
Hours
52
Min
17
Sec

Reminders

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Event overview

40 years since Tim Berners-Lee submitted his 'Information Management: A Proposal' memo at CERN on March 12, 1989, founding the World Wide Web. CERN/W3C are planning a 40-year retrospective.

Date
2029-03-12
Country / jurisdiction
Switzerland
Region
Europe
Category
Anniversary
Status
scheduled

Confirmation checklist

Before you act on this countdown

Use the timer for orientation, then run through these checks before booking, publishing, buying tickets, scheduling alerts, or moving operations around this date.

Date signal

The date is suitable for countdown use, with the source still owning late changes.

Local time

No reliable start time is attached yet, so this page stays date-first instead of implying midnight.

Calendar action

Add it to a calendar after checking the source for time, venue, or access changes.

Next useful path

Use Anniversary, 2029, or Europe paths below to compare related countdowns before deciding what to watch next.

Source trail

Source trail for World Wide Web — 40th Anniversary

Verify source

Primary source

home.cern

Last reviewed

2026-04-30

Tracker status

scheduled

Date precision

Single-date event without a reliable public start time; date-first countdown only.

Schema posture

Event structured data is emitted because the record is single-date and scheduled or confirmed.

This is an expected date. Use reminders and monitoring, but verify the source before making travel, purchase, publication, or staffing decisions.

Primary citation

The current date signal points to home.cern. The source URL is shown visibly on the page so readers can verify late changes instead of relying only on the timer.

Freshness and review

Source policy was reviewed on 2026-04-30. Live countdown values are render-time snapshots; editorial source fields update when the tracked event dataset changes.

Operational detail

The record does not carry a reliable public start time yet, so the page avoids implying a midnight or all-day start.

Weak-date handling

The page can support calendar actions and Event schema, while still telling readers to check the source for operational changes.

Background

About this countdown

A detailed editorial write-up for World Wide Web — 40th Anniversary is being prepared. In the meantime, see the primary source for the most current information.

View source →

Date confidence

Scheduled date

World Wide Web — 40th Anniversary is tracked as a scheduled event. The date is suitable for countdown and calendar use, while final logistics should still be checked against the linked source.

Source

https://home.cern/science/computing/birth-web
Source host
home.cern
Date precision
Single scheduled date from the linked source
Schema posture
Event startDate emitted because the record is single-date and scheduled/confirmed
Planning boundary
Use as a monitoring aid until the source trail is stronger

Structured data posture

This page emits Event structured data because the tracked record has a single scheduled or confirmed date. The linked source remains the final reference for time, venue, and operational changes.

Countdown evidence

Retention class

Date-first scheduled countdown

Evidence score

5/10 record signals

City-page readiness

Held to date-first

Evidence score5/10 signals present
primary source URL; tracked date; schema-safe date; place context; related event cluster
Date and schemaSchema-safe single date
Single-date event without a reliable public start time; date-first countdown only. Event structured data is emitted because the record is single-date and scheduled or confirmed.
Local-time readinessDate-first only
The record is not used as a city-local event page until it has a reliable time, timezone, and non-windowed date.
Record completeness1 concrete fields
country Switzerland
Weak-field watchlist4 fields to improve
verified public start time; venue; manual official-source note; historical sequence
Source freshnesshome.cern; reviewed 2026-04-30
Related crawl path: United Kingdom General Election 2029, Bitcoin Genesis Block — 20th Anniversary, European Parliament Election 2029, Bhopal Gas Tragedy 44th Anniversary.

Planning notes

How to use this World Wide Web — 40th Anniversary countdown

Countdown pages are useful when they are honest about what is known, what is merely expected, and what still needs checking. This page keeps the live timer separate from the source confidence and structured-data posture.

Date confidence

World Wide Web — 40th Anniversary is tracked as scheduled for Monday, March 12, 2029; the countdown can support reminders while final logistics still belong to home.cern. The page can emit precise Event structured data because the tracked record has a single scheduled or confirmed date.

What could change

Watch for date shifts, venue or access updates, broadcast windows, registration rules, and source corrections. The current precision is: Single-date event without a reliable public start time; date-first countdown only..

Local-time usefulness

No reliable source start time is attached yet, so the page stays date-first and avoids implying a midnight start. 858 days remain at render time.

Category context

World Wide Web — 40th Anniversary sits in Anniversary with country Switzerland. Related countdown links should help users compare similar events, not create unverified event-city pages.

Catalog-specific details

No creator, platform, league, brand, fixture, family, or alternate-name detail is attached to this event record.

Series and expectation notes

No series history, end date, or what-to-expect field is attached.

Priority note

This page is kept specific through source confidence, category, region, date precision, and update notes rather than generic countdown filler.

Verification trail

source URL https://home.cern/science/computing/birth-web. trust checks: Source host: home.cern, Date precision: Single scheduled date from the linked source, Schema posture: Event startDate emitted because the record is single-date and scheduled/confirmed, and Planning boundary: Use as a monitoring aid until the source trail is stronger. no manual editorial context is attached yet.

Record completeness

present fields: country Switzerland. missing or weak fields: verified public start time, venue, manual official-source note, and historical sequence

Related crawl path

Nearby retained events: United Kingdom General Election 2029, Bitcoin Genesis Block — 20th Anniversary, European Parliament Election 2029, Bhopal Gas Tragedy 44th Anniversary, and 26/11 Mumbai Attacks 20th Anniversary. These links should support topical discovery without creating unverified event-city pages.
Review boundary: this page tracks the public date signal, source link, category, region, and calendar posture. It does not replace official ticketing, exchange, broadcaster, organizer, court, regulator, or government notices.

Source reviewed Apr 30, 2026. The countdown record is intentionally labeled as scheduled or expected; use the source link and any range notes before treating the date as final.

Live values rendered at Nov 5, 7:07 PM UTC.

Related planning pages

Countdown hubAll currently tracked countdowns.Anniversary countdownsRelated events in this category.2029 countdownsEvents tracked for the same calendar year.Europe countdownsRegion-specific countdown pages.SourcesHow we cite and review date sources.Speculative datesHow expected and windowed dates are labeled.

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Frequently asked questions

When does World Wide Web — 40th Anniversary start?
World Wide Web — 40th Anniversary is scheduled for Monday, March 12, 2029. A precise local start time has not been published yet; this page updates when the source confirms it.
How long until World Wide Web — 40th Anniversary?
World Wide Web — 40th Anniversary is 858 days away as of the page render. The live timer above counts down to Monday, March 12, 2029 second-by-second in your local time zone.
Where does World Wide Web — 40th Anniversary take place?
World Wide Web — 40th Anniversary is hosted in Switzerland. The linked source is the canonical reference for venue, broadcast, and streaming details.
What time is World Wide Web — 40th Anniversary in my time zone?
Use the time-zone converter to map Monday, March 12, 2029 into your local zone, or pick a major city from the list above to see the exact local start time.

People also ask

When does World Wide Web — 40th Anniversary start?

World Wide Web — 40th Anniversary is scheduled for Monday, March 12, 2029. A precise local start time has not been published yet; this page updates when the source confirms it.

How long until World Wide Web — 40th Anniversary?

World Wide Web — 40th Anniversary is 858 days away as of the page render. The live timer above counts down to Monday, March 12, 2029 second-by-second in your local time zone.

Where does World Wide Web — 40th Anniversary take place?

World Wide Web — 40th Anniversary is hosted in Switzerland. The linked source is the canonical reference for venue, broadcast, and streaming details.

What time is World Wide Web — 40th Anniversary in my time zone?

Use the time-zone converter to map Monday, March 12, 2029 into your local zone, or pick a major city from the list above to see the exact local start time.