What version of starlight are you using?

0.13.1

What version of astro are you using?

3.6.3

What package manager are you using?

npm

What operating system are you using?

macOS

What browser are you using?

Firefox

Describe the Bug

I set lastUpdated in frontmatter to 2023-03-24:

And get March 23, 2024 as the output on the page:

But the <time> element includes the correct date.

The underlying component uses toLocaleDateString:

Which uses the user-agent's timezone. So I'm at -5 offset, so it'll always show the wrong day on my computer.

Link to Minimal Reproducible Example

http://stackblitz.com/sorry-i-can-submit-a-pr-this-is-pretty-well-described-right

Participation

• I am willing to submit a pull request for this issue.