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Evergreen date guide

What is celebrated on June 25?

See the observances and verified observance-history milestones attached to June 25. 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.

2020
First observance

National OLAPLEX Day

The official 2020 announcement calls that year the first-ever National OLAPLEX Day.

2012
Later action

Implantação da República

Amended Labour Code Article 234 so that 5 October was no longer among mandatory public holidays for the later statutory period beginning in 2013.

2011
First observance

Day of the Seafarer

IMO records state that the Day of the Seafarer was first celebrated in 2011.

2010
Institutional decision

Day of the Seafarer

Resolution 19 links the date to the conference’s adoption of the Manila amendments on 25 June 2010.

2008
Institutional decision

Capital Day (Kazakhstan)

Bounded by the cited primary institutional/legal record; not a claim about earlier undocumented origins.

About this date

What this date contains

6 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.

4 have a country-specific scope

Country-specific observances are not presented as worldwide events.

6 have in-depth guides

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

Reviewed depth

Other in-depth guides on June 25

Source-backedFixed AnnualIn-depth guide

Day of the Filipino Seafarer

25 June · Philippines / national maritime observance led by MARINA under Proclamation No. 183, s. 2011

Proclamation No. 183, s. 2011 declares June 25 of every year the Day of the Filipino Seafarer and directs MARINA to lead the observance; current MARINA material confirms continuing annual o…

Source-backedFixed AnnualIn-depth guide

Day of the Seafarer

25 June · International Maritime Organization observance

STCW/CONF.2/DC/4

Source-backedFixed AnnualIn-depth guide

Independence Day

25 June · Mozambique

Mozambique government history states that the Lusaka Accords set 25 June 1975 for independence and that independence was proclaimed on that date; current government sources list June 25 as…

Source-backedFixed AnnualIn-depth guide

Independence Day of the Republic of Croatia

25 June under the current observance framework · Croatia / national independence commemoration

The Government of Croatia’s 25 June 2026 Independence Day message states that the country marks Independence Day in memory of the 25 June 1991 decision on sovereignty and independence.

Source-backedFixed AnnualIn-depth guide

National OLAPLEX Day

25 June annually in OLAPLEX material · Private OLAPLEX brand-anniversary/community observance

OLAPLEX first-party material describes the 2020 observance as the first-ever National OLAPLEX Day, says June 25 marks the inception of OLAPLEX, and frames it as an annual brand-community ce…

Source-backedFixed AnnualIn-depth guide

Statehood Day

25 June · Slovenia / national holiday

Slovenia’s current Holidays and Days Off Act lists 25 June as Statehood Day and a work-free holiday; government history distinguishes the 25 June 1991 adoption of the independence documents…

Explore the mix

Topics represented on June 25

All topics →
Civic, Remembrance & History 3Workplace, Professions & Appreciation 2Celebrations & Social 1
6 observances

All observances on this date

Source-backedFixed AnnualIn-depth guide

Day of the Filipino Seafarer

25 June · Philippines / national maritime observance led by MARINA under Proclamation No. 183, s. 2011

Proclamation No. 183, s. 2011 declares June 25 of every year the Day of the Filipino Seafarer and directs MARINA to lead the observance; current MARINA material confirms continuing annual o…

Source-backedFixed AnnualIn-depth guide

Day of the Seafarer

25 June · International Maritime Organization observance

STCW/CONF.2/DC/4

Source-backedFixed AnnualIn-depth guide

Independence Day

25 June · Mozambique

Mozambique government history states that the Lusaka Accords set 25 June 1975 for independence and that independence was proclaimed on that date; current government sources list June 25 as…

Source-backedFixed AnnualIn-depth guide

Independence Day of the Republic of Croatia

25 June under the current observance framework · Croatia / national independence commemoration

The Government of Croatia’s 25 June 2026 Independence Day message states that the country marks Independence Day in memory of the 25 June 1991 decision on sovereignty and independence.

Source-backedFixed AnnualIn-depth guide

National OLAPLEX Day

25 June annually in OLAPLEX material · Private OLAPLEX brand-anniversary/community observance

OLAPLEX first-party material describes the 2020 observance as the first-ever National OLAPLEX Day, says June 25 marks the inception of OLAPLEX, and frames it as an annual brand-community ce…

Source-backedFixed AnnualIn-depth guide

Statehood Day

25 June · Slovenia / national holiday

Slovenia’s current Holidays and Days Off Act lists 25 June as Statehood Day and a work-free holiday; government history distinguishes the 25 June 1991 adoption of the independence documents…

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 →