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Jelia.nyc / Built here / The 420 World Clock

BUILT HERE · LIVE MAP

Where it is 4:20 right now, anywhere in the world

The 420 World Clock colours every time zone by how close its clock is to 4:20, live, and puts each country's marijuana law one tap away. The time is checked against the US Naval Observatory; every law card carries its sources.

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What it is

A single page that answers one question well: where in the world does the clock read 4:20 right now, and who is next? The map shades every zone from bright green at 4:20 through gold to slate blue six hours away, with the night side of the Earth drawn in real time.

Tap any zone, city or country for its local time and its law: legal, decriminalized, medical only or illegal, with the points that matter to a visitor and links to the sources. 197 countries, 67 map zones and 44 individual places each have their own card, and every card shows its country's flag, linked to Wikipedia.

Who it is for

Anyone curious about 4:20 around the world, and travellers who want to know what the law actually says before they go. It is information, not advice, and says so.

Developers get the same data through the free 420 API, the next project on this list.

How it started, and how I built it

It started as a joke and became a data project. Getting the clock right was easy; getting the law right for every country was the real work.

  1. One source of truth. Every law lives in a database with its sources and a change history. The website, the API and a downloadable SQLite copy are all generated from it, so they can never disagree.
  2. Time you can trust. Local times come from the official IANA time-zone database built into every browser, and the page corrects for a wrong device clock by checking the US Naval Observatory.
  3. Checked, not assumed. All 312 real time zones were tested against the map week by week for a whole year; that test found Morocco merged into the wrong zone, which is now fixed.
  4. Careful wording. A skull marks only countries where a death sentence has actually been handed down for marijuana, not every statute that allows one.
  5. Phone first. Large type, a full-screen map, and a layout designed for a phone before a desk.

What it shows I can do

  • Turning a messy, contested subject into clean, sourced data with a single source of truth.
  • Getting time right across every zone, offset and daylight-saving rule, and proving it with tests.
  • Shipping a polished public product end to end: data, design, hosting and monitoring.

For a client, the same approach produces dashboards and reference tools people can rely on, because every number can be traced to where it came from.

Questions people ask

Is this legal advice?

No. It is general information with sources, dated, and it says so on every card. Laws change; check official sources before you travel.

How accurate is the time?

As accurate as your phone, and better than a phone whose clock is off: the page checks itself against the US Naval Observatory.

Can I use the data?

Yes. The free 420 API serves all of it, and the data is open under CC BY 4.0.