2025
Later action
Día de la Virgen de Caacupé
Declared the Festividad de la Virgen de los Milagros de Caacupé national intangible cultural heritage.
Evergreen date guide
What is celebrated on December 1?
See the observances and verified observance-history milestones attached to December 1. 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.
2021
First observance
National Peppermint Bark Day
Williams Sonoma called December 1, 2022 the second annual celebration and December 1, 2023 the third annual celebration, which independently anchors the first annual edition to De…
2012
First observance
Day of the First President of the Republic of Kazakhstan
Government and contemporaneous reporting identify 2012 as the first celebration after the late-2011 law.
2012
First observance
Global Fat Bike Day
The origin interview identifies the first GFBD meeting in 2012, and contemporary Fat-Bike.com coverage immediately after December 1, 2012 reports Global Fat-bike Day as completed…
1999
First observance
Mindanao Week of Peace
Proclamation No. 207 designates this 1999 period and every year thereafter; the guide treats it as the first nationally designated occurrence rather than claiming independent even…
1957
First observance
Prisoners for Peace Day
WRI states that December 1 has been Prisoners for Peace Day since 1957.
1838
First observance
Royal Hobart Regatta
University of Tasmania archival history records the first Hobart Town Anniversary Regatta on 1 December 1838.
Curated global anchors
See the collection →Major global guides on December 1
A reviewed starting point drawn from prominent global observances with strong institutional or organizer sources. Each observance keeps its own documented status and scope.
Source-backedFixed AnnualIn-depth guide
World AIDS Day
United Nations observance
Reviewed depth
Other in-depth guides on December 1
Source-backedFixed AnnualIn-depth guide
Central African Republic national day / Republic Day
The Central African Republic government identifies 1 December 1958 as the date of proclamation of the Republic, and current diplomatic references list 1 December as the national day.
Source-backedFixed AnnualIn-depth guide
Day of the First President of the Republic of Kazakhstan
Kazakhstan’s 2011 law created December 1 First President’s Day as a state holiday; 2022 legal changes removed it from the non-working holiday law and Government Resolution No. 956 retained…
Source-backedFixed AnnualIn-depth guide
Dia da Restauração da Independência
Portugal’s Armed Forces commemorated Dia da Restauração da Independência on 1 December 2025, marking the restoration of national sovereignty in 1640; the Government’s national-holiday regis…
Source-backedFixed AnnualIn-depth guide
Freedom and Democracy Day
Chad’s Prime Minister’s office documented the official 1 December 2025 commemoration of the 35th Freedom and Democracy Day, and current constitutional/journal-official material lists 1 Dece…
Source-backedFixed AnnualIn-depth guide
Indigenous Faith Day
Arunachal Pradesh government holiday calendars list Indigenous Faith Day on 1 December, including the 2024 notification and 2026 state portal calendar.
Source-backedFixed AnnualIn-depth guide
National Day
Romania’s Law No. 10 of 31 July 1990 proclaims 1 December the National Day and repeals the former 23 August national-holiday decision; Romanian government material connects 1 December with…
Explore the mix
All topics →Topics represented on December 1
10 observances
All observances on this date
Source-backedFixed AnnualIn-depth guide
Central African Republic national day / Republic Day
The Central African Republic government identifies 1 December 1958 as the date of proclamation of the Republic, and current diplomatic references list 1 December as the national day.
Source-backedFixed AnnualIn-depth guide
Day of the First President of the Republic of Kazakhstan
Kazakhstan’s 2011 law created December 1 First President’s Day as a state holiday; 2022 legal changes removed it from the non-working holiday law and Government Resolution No. 956 retained…
Source-backedFixed AnnualIn-depth guide
Dia da Restauração da Independência
Portugal’s Armed Forces commemorated Dia da Restauração da Independência on 1 December 2025, marking the restoration of national sovereignty in 1640; the Government’s national-holiday regis…
Source-backedFixed AnnualIn-depth guide
Freedom and Democracy Day
Chad’s Prime Minister’s office documented the official 1 December 2025 commemoration of the 35th Freedom and Democracy Day, and current constitutional/journal-official material lists 1 Dece…
Source-backedFixed AnnualIn-depth guide
Indigenous Faith Day
Arunachal Pradesh government holiday calendars list Indigenous Faith Day on 1 December, including the 2024 notification and 2026 state portal calendar.
Source-backedFixed AnnualIn-depth guide
National Day
Romania’s Law No. 10 of 31 July 1990 proclaims 1 December the National Day and repeals the former 23 August national-holiday decision; Romanian government material connects 1 December with…
Source-backedFixed AnnualIn-depth guide
National Peppermint Bark Day
Williams Sonoma’s first-party releases identify December 1 as the annual National Peppermint Bark Day celebration; current observance history also attributes the holiday launch to Williams…
Source-backedFixed AnnualIn-depth guide
Prisoners for Peace Day
War Resisters’ International documents 1 December as Prisoners for Peace Day and traces the observance to 1957; WRI annual reporting independently records the 1 December campaign date.
Source-backedFixed AnnualIn-depth guide
State Inauguration Day
Nagaland government sources identify 1 December 1963 as the formal inauguration of the State of Nagaland and continue to commemorate 1 December as Statehood Day; the State of Nagaland Act,…
Source-backedFixed AnnualIn-depth guide
World AIDS Day
United Nations observance
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 →