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Evergreen date guide

What is celebrated on February 15?

See the observances and verified observance-history milestones attached to February 15. 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.

2013
First observance

International Angelman Day

Organizer notice dated February 4, 2013 calls the upcoming 2013 campaign the first International Angelman Day.

2005
Later action

Pet Theft Awareness Day

Recorded a February 14, 2005 Last Chance for Animals-sponsored Pet Theft Awareness Day as a city special event.

2002
Later action

International Mother Language Day

Welcomed UNESCO’s 17 November 1999 decision proclaiming 21 February as International Mother Language Day within a broader General Assembly resolution on multilingualism.

1996
First observance

National Flag of Canada Day

Government of Canada history says the date was declared National Flag of Canada Day in 1996 and has been observed every year since.

About this date

What this date contains

11 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.

5 have a country-specific scope

Country-specific observances are not presented as worldwide events.

11 have in-depth guides

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

Reviewed depth

Other in-depth guides on February 15

Source-backedFixed AnnualIn-depth guide

International Angelman Day

15 February · international Angelman syndrome awareness observance

Angelman Syndrome Foundation and participating Angelman organizations

Source-backedFixed AnnualIn-depth guide

Liberation Day

15 February · Afghanistan / February 15 Soviet-withdrawal remembrance; current institution-specific official naming

Afghanistan Ministry of Foreign Affairs and 2026 Mumbai consular holiday calendar; institutional English naming differs

Source-backedFixed AnnualIn-depth guide

Lui-Ngai-Ni

15 February annually · Manipur Naga seed-sowing cultural festival

The Government of Manipur Department of Tribal Affairs and Hills says Lui-Ngai-Ni is a collective festival of the Nagas observed on 15 February every year and describes it as a seed-sowing…

Source-backedFixed AnnualIn-depth guide

Lui-Ngai-Ni

15 February · Manipur, India / Naga seed-sowing festival

The Government of Manipur Department of Tribal Affairs and Hills says Lui-Ngai-Ni is observed on 15 February every year and describes it as a collective Naga seed-sowing festival.

Source-backedFixed AnnualIn-depth guide

National Flag of Canada Day

15 February · Canadian civic observance marking the national flag

Government of Canada / Canadian Heritage; declared in 1996 and tied to the first raising of the maple leaf flag in 1965

Source-backedFixed AnnualIn-depth guide

National Wisconsin Day

15 February · United States / National Day Calendar National State Days series — Wisconsin

National Day Calendar lists the private National Wisconsin Day on February 15; U.S. Senate records statehood on May 29, 1848. A Wisconsin gubernatorial proclamation dated January 27, 2026 l…

Explore the mix

Topics represented on February 15

All topics →
Civic, Remembrance & History 5Celebrations & Social 2Health, Wellness & Awareness 1Arts, Entertainment & Lifestyle 1Faith, Tradition & Spirituality 1Animals, Nature & Environment 1
11 observances

All observances on this date

Source-backedFixed AnnualIn-depth guide

International Angelman Day

15 February · international Angelman syndrome awareness observance

Angelman Syndrome Foundation and participating Angelman organizations

Source-backedFixed AnnualIn-depth guide

Liberation Day

15 February · Afghanistan / February 15 Soviet-withdrawal remembrance; current institution-specific official naming

Afghanistan Ministry of Foreign Affairs and 2026 Mumbai consular holiday calendar; institutional English naming differs

Source-backedFixed AnnualIn-depth guide

Lui-Ngai-Ni

15 February annually · Manipur Naga seed-sowing cultural festival

The Government of Manipur Department of Tribal Affairs and Hills says Lui-Ngai-Ni is a collective festival of the Nagas observed on 15 February every year and describes it as a seed-sowing…

Source-backedFixed AnnualIn-depth guide

Lui-Ngai-Ni

15 February · Manipur, India / Naga seed-sowing festival

The Government of Manipur Department of Tribal Affairs and Hills says Lui-Ngai-Ni is observed on 15 February every year and describes it as a collective Naga seed-sowing festival.

Source-backedFixed AnnualIn-depth guide

National Flag of Canada Day

15 February · Canadian civic observance marking the national flag

Government of Canada / Canadian Heritage; declared in 1996 and tied to the first raising of the maple leaf flag in 1965

Source-backedFixed AnnualIn-depth guide

National Wisconsin Day

15 February · United States / National Day Calendar National State Days series — Wisconsin

National Day Calendar lists the private National Wisconsin Day on February 15; U.S. Senate records statehood on May 29, 1848. A Wisconsin gubernatorial proclamation dated January 27, 2026 l…

Source-backedFixed AnnualIn-depth guide

Parinirvana Day

15 February in the Triratna fixed-date festival calendar; other Buddhist traditions may use different dates · Buddhist commemoration of the Buddha’s final nirvana, with tradition-specific calendars

The Buddhist Centre / Triratna festival calendar lists Parinirvana Day as a fixed-date festival on 15 February, and 2026 community material continues the observance.

Source-backedFixed AnnualIn-depth guide

Sretenje — Serbian Statehood Day

15 February annually · Serbia / national holiday

The Serbian Government identifies 15 February as Serbian Statehood Day (Sretenje), commemorating the 1804 uprising and 1835 constitution.

Source-backedFixed AnnualIn-depth guide

Total Defence Day

15 February · Singapore national Total Defence commemoration

Singapore Ministry of Defence / Total Defence programme

Source-backedFixed AnnualIn-depth guide

USS Maine sinking anniversary

15 February annually in cited remembrance practice · United States / Spanish-American War historical remembrance

U.S. Naval History and Heritage Command documents an annual February 15 USS Maine commemoration at Arlington, while the Sons of Spanish American War Veterans explicitly lists “Remember the…

Source-backedFixed AnnualIn-depth guide

World Hippo Day

15 February annually in cited zoo practice · Hippopotamus awareness and conservation observance

Multiple established zoological institutions independently use February 15 for World Hippo Day, including current and multi-year observance by Zoos SA and Cincinnati Zoo; the original creat…

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.

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