The next meetups are:

    September 20, 2023 - Wed 7:00 - 9:00pm (Europe/London) 
    September 27, 2023 - Wed 6:00 - 8:00pm (America/Los_Angeles)

The individual event pages have timezone information (i.e. https://events.indieweb.org/2023/09/homebrew-website-club-eu...). I'm not sure why the homepage doesn't.