discourse/plugins/discourse-local-dates/config/settings.yml

plugins:
  discourse_local_dates_email_format:
    default: "YYYY-MM-DDTHH:mm:ss[Z]"
    client: true
  discourse_local_dates_enabled:
    default: true
    client: true
  discourse_local_dates_default_formats:
    default: "LLL|LTS|LL|LLLL"
    client: true
    type: list
  discourse_local_dates_default_timezones:
    default: "Europe/Paris|America/Los_Angeles"
    client: true
    type: list