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title: WallTimeToUTC
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---

# WallTimeToUTC

Converts a datetime from a specified timezone to UTC.

## Signature

`WallTimeToUTC (Date date, string timezone, function callback)`

## Parameters

**_date_:** Type: `Date`. A JavaScript `Date` object.

**_timezone_:** Type: `String`. A time zone ID based on the `` class, for example, `"America/Los_Angeles"`.

**_callback_**

Type: `function`

A function to call after the conversion is done. Access the converted value in the first parameter of the callback.