Steps
Go to Settings → General Settings in the left-hand menu.
Scroll down to the Language & Region section.
Click Edit.
Under Time format, choose one of the following options:
12 Hour Clock (e.g., 2:00 PM)
24 Hour Clock (e.g., 14:00)
Click Save to apply your changes.
Notes
This setting affects how time appears throughout your organization’s account, including calendars and documents.
You must have permission to edit organization settings to change this option.
