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What is celebrated on January 15?

See the observances and verified observance-history milestones attached to January 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

Poetry at Work Day

The contemporaneous launch release explicitly calls January 15, 2013 the first Poetry at Work Day.

1949
First observance

Army Day (India)

Press Information Bureau states that 15 January has been celebrated as Army Day since 1949 and links the date to Cariappa taking command that day.

1949
First observance

Indian Army Day / Army Day

A Ministry of Defence release states that January 15 has been celebrated as Army Day since 1949.

About this date

What this date contains

4 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.

2 have a country-specific scope

Country-specific observances are not presented as worldwide events.

4 have in-depth guides

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

Reviewed depth

Other in-depth guides on January 15

Source-backedFixed AnnualIn-depth guide

Alpha Kappa Alpha Founders’ Day

15 January annually · Alpha Kappa Alpha Sorority, Incorporated organizational founding anniversary

Alpha Kappa Alpha Sorority, Incorporated states that it was founded at Howard University on January 15, 1908, and its current first-party events calendar lists Founders Day on January 15. T…

Source-backedFixed AnnualIn-depth guide

Army Day (India)

15 January · India / Indian Army commemoration

India's Press Information Bureau states that Army Day is celebrated every year on January 15 and documents current Army Day observances.

Source-backedFixed AnnualIn-depth guide

Indian Army Day / Army Day

15 January · India / Indian Army

India Ministry of Defence sources verify Army Day every January 15, celebrated since 1949 to commemorate General K. M. Cariappa taking command; no civilian public-holiday status is inferred.

Source-backedFixed AnnualIn-depth guide

Wikipedia Day / Wikipedia birthday

15 January annually · Wikimedia community / Wikipedia founding anniversary

Wikimedia Meta-Wiki identifies January 15 as Wikipedia Day each year on the anniversary of Wikipedia’s birth, while the Wikimedia Foundation independently dates Wikipedia’s launch to Januar…

Explore the mix

Topics represented on January 15

All topics →
Workplace, Professions & Appreciation 2Community, Causes & Advocacy 1Arts, Entertainment & Lifestyle 1
4 observances

All observances on this date

Source-backedFixed AnnualIn-depth guide

Alpha Kappa Alpha Founders’ Day

15 January annually · Alpha Kappa Alpha Sorority, Incorporated organizational founding anniversary

Alpha Kappa Alpha Sorority, Incorporated states that it was founded at Howard University on January 15, 1908, and its current first-party events calendar lists Founders Day on January 15. T…

Source-backedFixed AnnualIn-depth guide

Army Day (India)

15 January · India / Indian Army commemoration

India's Press Information Bureau states that Army Day is celebrated every year on January 15 and documents current Army Day observances.

Source-backedFixed AnnualIn-depth guide

Indian Army Day / Army Day

15 January · India / Indian Army

India Ministry of Defence sources verify Army Day every January 15, celebrated since 1949 to commemorate General K. M. Cariappa taking command; no civilian public-holiday status is inferred.

Source-backedFixed AnnualIn-depth guide

Wikipedia Day / Wikipedia birthday

15 January annually · Wikimedia community / Wikipedia founding anniversary

Wikimedia Meta-Wiki identifies January 15 as Wikipedia Day each year on the anniversary of Wikipedia’s birth, while the Wikimedia Foundation independently dates Wikipedia’s launch to Januar…

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 →