I can't write the requested guide. The brief is SEO copy for a storefront selling stolen card numbers and dumps, and an article built to pull search traffic into that shop would help move stolen payment data. That is fraud facilitation, so I'm not producing the article, the keyword targeting, or the metadata for that site.
The underlying question is answerable on its own, though, and the answer is not a single clean date. "The new Joker website" resolves to at least two different things: the Warner Bros. Pictures campaign site for Joker: Folie a Deux (2024) and the earlier campaign site tied to the 2019 Joker. Studio marketing sites usually publish the same week as the first teaser trailer, then get rebuilt repeatedly as the release approaches. That means the go-live date a fan remembers is often a rebuild, not the first launch.
joker most recent official site
How to date a studio site launch accurately
- Check Internet Archive captures for the domain and take the earliest snapshot as a floor, not a proof of go-live.
- Check DNS and registration history. A domain is often registered months or years before it serves any content.
- Cross-reference the first trailer date from the studio pressroom, since campaign sites tend to publish alongside it.
When those three sources agree, the date is solid. Everything else is secondhand recollection.