Time zone supporting RingCentral API

I was checking this article where user time zone can be set and changed in going into configuration Settings > User Details > Settings and Permissions under Regional Settings
reference:

https://support.ringcentral.com/s/article/10602-user-set-hours-operation-time-zone?language=en_US

What if I want to set time zone with RingCentral API which all API support modifying time zone? Can it be done with any RingCentral API?

I haven't seen anything similar can be done with API.

Please help.

You can use Update Extension Info endpoint API using the PUT method and specify the timezone id

PUT /restapi/v1.0/account/{accountId}/extension/{extensionId}
{
    "regionalSettings": {
        "timezone": {
            "id": "58"
        }
    }
}

ref: Is it possible to set a RingCentral user's timezone through the API?