It's easy to change your calendar settings in Outlook on the web so your calendar looks and behaves the way you want it to.
Go to Settings
To find the most frequently used Calendar settings, select Settings . To change settings not included in the settings pane, select View all Outlook settings.
Change your Theme
Under Theme, choose from one of the themes displayed. You can also select View all to choose from more options.
Set your time and date format
You can change the current time zone, date format, and time format for your calendar. The default settings are taken from your Outlook account.
Under Current time zone, choose a different time zone from the drop-down list.
Under Date format, choose the format you prefer.
Under Time format, choose the format you prefer.
Set the first day of your week
Under First day of the week, choose the day you want to start your week from the drop-down list.
See more settings
To find other ways to personalize your Outlook on the web experience, scroll to the bottom of Settings and select View all Outlook settings.