Outlook Web App is the Online Version of the Outlook Client. This obviously runs in the browser of choice. New or fairly new users of Office 365 might receive notifications Informing them that the Timezone has not been set in Outlook. This notification comes in a regular basis and it might get annoying. So, before this gets Into your nerves, here is how one would set up their Timezone in the Outlook Web App. 🙂
You would have to go to this link https://outlook.office365.com/owa/?path=/options/regional and then select your Timezone and format.