Hello,

The date picker component we use in Kibana is not fully internationalized. The coverage of this component varies between releases (elastic/kibana#63742)

• I've added tests in Kibana to ensure that we are passing all the EUI i18n tokens. ([i18n] Test EUI i18n tokens coverage kibana#106377)
• I'm opening this issue to ensure that EUI has some tests to make sure that all the calendar is internationalized.

Context: (elastic/kibana#63742 (comment))