<!-- Do not edit this file. It is automatically generated by API Documenter. --> [Home](./index.md) > [puppeteer](./puppeteer.md) > [Page](./puppeteer.page.md) > [emulateTimezone](./puppeteer.page.emulatetimezone.md) ## Page.emulateTimezone() method <b>Signature:</b> ```typescript emulateTimezone(timezoneId?: string): Promise<void>; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | timezoneId | string | Changes the timezone of the page. See [ICU’s metaZones.txt](https://source.chromium.org/chromium/chromium/deps/icu.git/+/faee8bc70570192d82d2978a71e2a615788597d1:source/data/misc/metaZones.txt) for a list of supported timezone IDs. Passing <code>null</code> disables timezone emulation. | <b>Returns:</b> Promise<void>