2022
First observance
World Day for the Prevention of and Healing from Child Sexual Exploitation, Abuse and Violence
The Secretary-General’s noon briefing on 18 November 2022 states that the date marked the first World Day.
Evergreen date guide
What is celebrated on November 18?
See the observances and verified observance-history milestones attached to November 18. Each observance keeps its own source and date details.
Verified history
Today in history →On this date in observance history
Selected observance milestones connected to this date, based on reviewed sources.
2020
First observance
International Day of Islamic Art
UNESCO describes its 18–20 November 2020 Comoros program as the first edition, while Bahrain’s authority also describes the 2020 celebration as the inaugural edition.
2004
Institutional decision
National Day of the Horse
GovInfo records the agreed-to Senate action on 18 November 2004.
1976
First observance
Great American Smokeout®
ACS calls the California event on November 18, 1976 the first official Smokeout.
1918
Institutional decision
Proclamation of the Republic of Latvia (National Day)
The state proclamation occurred on 18 November 1918.
Reviewed depth
Other in-depth guides on November 18
Source-backedRule Based AnnualIn-depth guide
BOTOX® Cosmetic (onabotulinumtoxinA) Day
AbbVie states that BOTOX® Cosmetic Day is held annually on the third Wednesday of November and identifies it as an Allergan Aesthetics/AbbVie brand observance.
Source-backedEdition SpecificIn-depth guide
GIS Day
The official GIS Day site lists 18 November 2026, and Esri’s GIS history identifies the first formal GIS Day in 1999 and the recurring third-Wednesday-in-November rule. Public guidance keep…
Source-backedFixed AnnualIn-depth guide
International Day of Islamic Art
Proclaimed at UNESCO’s 40th General Conference (2019)
Source-backedFixed AnnualIn-depth guide
Mickey Mouse Birthday
Disney first-party sources treat November 18, 1928—the release/premiere date associated with Steamboat Willie—as Mickey Mouse’s birthday convention and continue to mark November 18.
Source-backedFixed AnnualIn-depth guide
Minnie Mouse Birthday
Disney first-party sources state that Minnie Mouse debuted alongside Mickey in Steamboat Willie on November 18, 1928 and treat November 18 as both characters’ birthday convention.
Source-backedFixed AnnualIn-depth guide
Proclamation of the Republic of Latvia (National Day)
Latvia’s Ministry of Foreign Affairs lists 18 November as the Proclamation of the Republic of Latvia (National Day), and Latvia’s in-force law on holidays recognizes 18 November as Proclama…
Explore the mix
All topics →Topics represented on November 18
8 observances
All observances on this date
Source-backedRule Based AnnualIn-depth guide
BOTOX® Cosmetic (onabotulinumtoxinA) Day
AbbVie states that BOTOX® Cosmetic Day is held annually on the third Wednesday of November and identifies it as an Allergan Aesthetics/AbbVie brand observance.
Source-backedEdition SpecificIn-depth guide
GIS Day
The official GIS Day site lists 18 November 2026, and Esri’s GIS history identifies the first formal GIS Day in 1999 and the recurring third-Wednesday-in-November rule. Public guidance keep…
Source-backedFixed AnnualIn-depth guide
International Day of Islamic Art
Proclaimed at UNESCO’s 40th General Conference (2019)
Source-backedFixed AnnualIn-depth guide
Mickey Mouse Birthday
Disney first-party sources treat November 18, 1928—the release/premiere date associated with Steamboat Willie—as Mickey Mouse’s birthday convention and continue to mark November 18.
Source-backedFixed AnnualIn-depth guide
Minnie Mouse Birthday
Disney first-party sources state that Minnie Mouse debuted alongside Mickey in Steamboat Willie on November 18, 1928 and treat November 18 as both characters’ birthday convention.
Source-backedFixed AnnualIn-depth guide
Proclamation of the Republic of Latvia (National Day)
Latvia’s Ministry of Foreign Affairs lists 18 November as the Proclamation of the Republic of Latvia (National Day), and Latvia’s in-force law on holidays recognizes 18 November as Proclama…
Source-backedRule Based AnnualIn-depth guide
World COPD Day
Global Initiative for Chronic Obstructive Lung Disease (GOLD)
Source-backedFixed AnnualIn-depth guide
World Day for the Prevention of and Healing from Child Sexual Exploitation, Abuse and Violence
A/RES/77/8
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 →