Setup or change browser timezone

[angrykoala]

Steps to reproduce

Tell us about your environment:

• Puppeteer version: 1.8
• Platform / OS version: linux
• URLs (if applicable):
• Node.js version: 8.12.0

I need to use Puppeteer with different timezones for testing purposes. Would it be possible to set the browser default timezone?

[DuBistKomisch]

You can override the timezone in chromium by setting the TZ env var. One way to do this is via env in the launch arguments, e.g.:

puppeteer.launch({
  env: {
    TZ: 'Australia/Melbourne',
    ...process.env
  }
});

[angrykoala]

Thanks @DuBistKomisch I'll try that

[jcserracampos]

It's not working for me.

[doingweb]

In case anyone else coming across this also has the follow-up question:

What are valid values for the TZ environment variable?

It's the list of tz database timezone names.

[hym1884603]

In case anyone else coming across this also has the follow-up question:

What are valid values for the TZ environment variable?

It's the list of tz database timezone names.

It's not working for me too.

[khanh-dtp-vn]

It's not working for me too.

[DuBistKomisch]

still working for me... post some details if you expect any help

[crobinson42]

Does anyone know a way to change the timezone on the fly?

[DuBistKomisch]

@crobinson42 I don't think it's possible to change the env var without restarting the process, the only way to change it dynamically would be to change the actual system timezone and not use an env var at all.

[mathiasbynens]

#4949

[crobinson42]

Solution

This was added in the above mentioned PR:

const page = await browser.newPage()

await page.emulateTimezone(timezone)