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We are trying to retreive current user's profile Time Zone SPS-TimeZone from a SharePoint Framework webpart, but we are faicing an error (see below). Does anyone know about the best/most effecient way of getting current user's time zone from a user profile? Maybe without an extra request? Unfortunately, getting time zones from JavaScript by using new DateTime is not an option in our case.

import { sp } from "@pnp/sp";

async function Main(){
  const timeZone = await 
  sp.profiles.myProperties.select("SPS%2dTimeZone").get()
  console.log(timeZone);
}
Main();

Error:

Uncaught (in promise) Error: Error making HttpClient request in queryable [400] ::> {"odata.error":{"code":"-1, Microsoft.SharePoint.Client.InvalidClientQueryException","message":{"lang":"en-US","value":"The expression \"SPS-TimeZone\" is not valid."}}} at new HttpRequestError (sp.es5.umd.bundle.js:1831) at sp.es5.umd.bundle.js:1840

When we get all user profiperties, then SPS-TimeZone is there

import { sp } from "@pnp/sp";

async function Main(){
  const timeZone = await sp.profiles.myProperties.get()
  console.log(timeZone)
}
Main();

In theory, we could get all user's properties and then select the one we want, but getting all properties takes about 900ms whereas getting a single one is only 200ms. We think waiting for 1 seconds just to get user's time zone is too expensive.

enter image description here

Using this.context.pageContext.legacyPageContext

We were also thinking about using legacypageContext, but I've read that this object's properties might change in the future and we are encouraged to make an API call instead. Can someone comment on this, please? Is it really not safe to use legacyPageContext?

this.context.pageContext.legacyPageContext.webTimeZoneData
0

Please, correct me if I'm wrong. Even though we are not supposed to use legacyPageContext, there is still a way to get to the page contenxt via this.context.pageContext. It's not exactly the same as the good old _spContextInfo, but it is supposed to have most if not all properties. For example:

Istead of...

this.context.pageContext.legacyPageContext.userTimeZoneData

We need to access the user's time zone the following way:

const user:any = this.context.pageContext.user;
console.log("user.timeZoneInfo:", user.timeZoneInfo);

Notice that I have to cast this.context.pageContext.user to any. This is because timeZoneInfo property contains the value even though there is no property in the interface. Strange, but OK...

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