You may find dates are not showing correctly on your site after updating the Local (v1.3.0) and Cart (v2.1.0) extensions, we now use ISO format rather than PHP-specific format to support localized dates. See Carbon documentation for more information on dates localization.
To make the necessary changes, see the examples on the readme for localBox component, CartBox component and Checkout component.
DOES NOT apply to fresh installs.