In your Dashboard Settings, you can configure some options (Date, Time, Units) related to your country.
To do so go to Settings > Customization > Portal
Date and Time Format
Click on the Date and Time Format panel to expand these options and choose:
Date format: how dates appear on your orders in the portal.
Time format: how times appear on your orders in the portal.
Units: Select the unit of measurement based on your country’s system, either the metric or imperial system. This way item weight and distance for delivery will be displayed in units you can easily understand.