Evergreen date guide

What is celebrated on June 11?

See the observances and verified observance-history milestones attached to June 11. Each observance keeps its own source and date details.

Verified history

On this date in observance history

Today in history →

Selected observance milestones connected to this date, based on reviewed sources.

2024

First observance

International Day of Play

UNICEF and UN Web TV identify 11 June 2024 as the first-ever/inaugural International Day of Play.

1872

First observance

King Kamehameha Day

The official commission history identifies this as the first Kamehameha Day holiday celebration.

About this date

What this date contains

2 observances

Each observance is shown once in this view, with its own source and scope details available on the guide page.

0 repeat predictably

0 use a fixed annual date and 0 follow a reusable calendar rule.

0 are edition-specific

These dates are shown only for the year or edition that has been confirmed.

0 have a country-specific scope

Country-specific observances are not presented as worldwide events.

2 have in-depth guides

These pages include reviewed meaning, history, activities, facts and FAQs.

Reviewed depth

Other in-depth guides on June 11

Source-backedFixed AnnualIn-depth guide

International Day of Play

11 June · United Nations / international observance

A/RES/78/268

Source-backedFixed AnnualIn-depth guide

King Kamehameha Day

11 June · Hawaiʻi / state holiday and official King Kamehameha I commemoration

State of Hawaiʻi sources verify the 22 December 1871 proclamation, first celebration on 11 June 1872, current June 11 state-holiday status and statutory celebration commission.

Explore the mix

Topics represented on June 11

All topics →

Community, Causes & Advocacy 1 Civic, Remembrance & History 1

2 observances

All observances on this date

Source-backedFixed AnnualIn-depth guide

International Day of Play

11 June · United Nations / international observance

A/RES/78/268

Source-backedFixed AnnualIn-depth guide

King Kamehameha Day

11 June · Hawaiʻi / state holiday and official King Kamehameha I commemoration

State of Hawaiʻi sources verify the 22 December 1871 proclamation, first celebration on 11 June 1872, current June 11 state-holiday status and statutory celebration commission.

How dates are selected

This page combines fixed annual dates, reusable calendar rules and year-specific dates confirmed for 2026. Variable or historical dates are included only when they are clearly supported.

Read the methodology →