Source-backedRule Based AnnualIn-depth guide
First Thursday in May; 7 May in 2026 · Cybersecurity-awareness observance
Intel states that it created World Password Day in 2013. The observance is held on the first Thursday of May and is now used broadly for cybersecurity awareness; no single exclusive current…
Source-backedFixed AnnualIn-depth guide
25 October annually · Global / International Pasta Organisation observance
International Pasta Organisation material verifies October 25, the first World Pasta Day in Naples in 1998 and annual continuation; exact establishing body/date rationale remain unresolved.
Source-backedFixed AnnualIn-depth guide
17 September · World Health Organization global health observance
WHO observance
Source-backedFixed AnnualIn-depth guide
23 February annually in Rotary usage · Rotary / service-organization anniversary context
Rotary’s official blog identifies 23 February as Rotary’s anniversary date; Rotary club materials use World Peace and Understanding Day for 23 February each year.
Source-backedFixed AnnualIn-depth guide
19 October each year · United States Bone and Joint Initiative / pediatric musculoskeletal awareness
USBJI institutional history says its Pediatric Specialty Group launched annual World Pediatric Bone and Joint Day in October 2012 for October 19 each year, and current USBJI program pages c…
Source-backedFixed AnnualIn-depth guide
25 April in current Penguins International observance · International / penguin conservation awareness
Penguins International’s World Penguin Day page identifies 25 April as the observance date and frames it around penguin awareness and conservation.
Source-backedFixed AnnualIn-depth guide
6 June · international professional pest-management awareness observance
Global pest-management associations; public-facing information hosted by the National Pest Management Association
Source-backedFixed AnnualIn-depth guide
25 September · International / FIP-led pharmacy profession observance
International Pharmaceutical Federation states that its Council adopted World Pharmacists Day in 2009, that September 25 marks FIP’s 1912 inception anniversary, and that FIP leads the campa…
Source-backedRule Based AnnualIn-depth guide
Third Thursday of November · UNESCO international day
Proclaimed by UNESCO General Conference in 2005
Source-backedFixed AnnualIn-depth guide
19 August annually; 19 August 2026 confirmed · WorldPhotographyDay.com / global organizer campaign
The event organizer describes World Photography Day as an annual worldwide celebration on 19 August and confirms Wednesday, 19 August 2026.
Source-backedFixed AnnualIn-depth guide
8 November · International / organizer-led pianist recognition observance
The official World Pianist Day project identifies Ivan Manko-Vertogradov as creator, November 8, 2014 as the first edition and the 8×11/88-key date symbolism.
Source-backedFixed AnnualIn-depth guide
22 August annually · Global / World Plant Milk Day campaign
The World Plant Milk Day campaign identifies 22 August as its annual date, while ProVeg documents the campaign’s 2017 launch with Plant Based News.
Source-backedFixed AnnualIn-depth guide
10 October · International promotional context / VeganBurg-created plant-based burger observance
VeganBurg launched World Plant-Based Burger Day on October 10, 2020 as part of its tenth-anniversary campaign.
Source-backedFixed AnnualIn-depth guide
11 March · international plumbing profession and public-health awareness observance led by the World Plumbing Council
World Plumbing Council first-party material verifies March 11, an October 2009 WPC launch, the inaugural March 11, 2010 observance and continuing annual WPC stewardship.
Source-backedFixed AnnualIn-depth guide
12 November · Organizer-backed global health advocacy observance
Every Breath Counts coalition and global pneumonia community
Source-backedFixed AnnualIn-depth guide
21 March · UNESCO international observance
UNESCO 30 C/Resolution 29
Source-backedFixed AnnualIn-depth guide
11 July · United Nations / international observance
A/RES/45/216
Source-backedFixed AnnualIn-depth guide
5 May · UNESCO / international observance
UNESCO 40 C/Resolution 70 (formal adopted act; 40 C/75 is a separate General Conference document identifier)
Source-backedFixed AnnualIn-depth guide
9 October · UPU / United Nations / international observance
UPU/1969/Res.C.11
Source-backedFixed AnnualIn-depth guide
22 May · international preeclampsia awareness observance
Preeclampsia Foundation and global maternal-health partners
Source-backedFixed AnnualIn-depth guide
3 May · UNESCO / United Nations international observance
UNESCO 26 C/Resolution 4.3
Source-backedFixed AnnualIn-depth guide
29 October · Organizer-backed international observance
International Federation of Psoriasis Associations (IFPA)
Source-backedFixed AnnualIn-depth guide
8 September · Organizer-backed international observance
World Physiotherapy
Source-backedFixed AnnualIn-depth guide
10 February · FAO / United Nations / international observance
A/RES/73/251
Source-backedFixed AnnualIn-depth guide
21 March · international cultural observance of puppetry led by UNIMA
UNIMA first-party material verifies a 2003 launch, annual March 21 recurrence and continuing stewardship through international messages, National Centres and campaign materials.
Source-backedHistorical LegacyIn-depth guide
Historical: second Thursday of November through 2020; CQI moved to World Quality Week from 2021 · Historical Chartered Quality Institute one-day quality campaign; CQI successor campaign is World Quality Week
CQI history records the first World Quality Day on 9 November 1989 and the former second-Thursday-in-November recurrence. CQI states that from November 2021 it moved from one day to a week-…
Source-backedFixed AnnualIn-depth guide
13 February · UNESCO / United Nations / international observance
A/RES/67/124
Source-backedFixed AnnualIn-depth guide
8 November · International radiography profession
Source-backedFixed AnnualIn-depth guide
22 June annually · Rainforest Partnership / global conservation campaign
Rainforest Partnership states that it founded World Rainforest Day in 2017 and identifies the observance date as 22 June.
Source-backedFixed AnnualIn-depth guide
31 July · international ranger remembrance and professional-recognition observance led by the International Ranger Federation with The Thin Green Line
International Ranger Federation first-party material verifies July 31, identifies the observance as an IRF initiative promoted with The Thin Green Line and confirms current annual stewardsh…
Source-backedRule Based AnnualIn-depth guide
First Wednesday of February annually · LitWorld / global literacy campaign
LitWorld says World Read Aloud Day is celebrated on the first Wednesday of February, began in 2010, and was created in New York City by Pam Allyn and a young reader.
Source-backedFixed AnnualIn-depth guide
8 May · International Red Cross and Red Crescent Movement annual humanitarian recognition observance
IFRC first-party history verifies May 8, post-First-World-War conference origins, the first International Red Cross Day on May 8, 1948, the Henry Dunant birthday rationale, the 1984 change…
Source-backedFixed AnnualIn-depth guide
1 June annually · Global / World Reef Day organizer-led awareness campaign
World Reef Day first-party material identifies June 1 as the annual date, Raw Elements USA as founder, and its 2021 edition as the third year, supporting a 2019 start.
Source-backedFixed AnnualIn-depth guide
26 June · international refrigeration, air-conditioning and heat-pump awareness campaign coordinated by the World Refrigeration Day Secretariat
World Refrigeration Day Secretariat first-party material verifies Stephen Gill as originator of the idea, Secretariat establishment, inaugural 26 June 2019 observance, the Lord Kelvin birth…
Source-backedFixed AnnualIn-depth guide
20 June · United Nations / UNHCR international observance
A/RES/55/76
Source-backedRule Based AnnualIn-depth guide
Third Sunday of January · Bahá’í-initiated interfaith observance with worldwide community participation
Bahá’í World News Service states that World Religion Day was initiated in 1950 by the National Spiritual Assembly of the Bahá’ís of the United States and is commemorated on the third Sunday…
Source-backedFixed AnnualIn-depth guide
22 September · international rhino awareness and conservation observance
World Rhino Day’s official history records WWF-South Africa’s 2010 announcement and a 2011 international expansion led by Lisa Jane Campbell and Rhishja; September 22 remains the annual dat…
Source-backedRule Based AnnualIn-depth guide
Fourth Sunday of September · international river-awareness and stewardship observance
World Rivers Day organizers; global initiative launched in 2005 alongside the UN Water for Life Decade
Source-backedFixed AnnualIn-depth guide
6 July · United Nations / international observance
A/RES/78/326
Source-backedFixed AnnualIn-depth guide
31 October annually · Global / World Savings and Retail Banking Institute tradition
WSBI traces World Savings Day to World Thrift Day established at the 1st International Thrift Congress in Milan on 31 October 1924 and says members continue to mark October 31; India docume…
Source-backedFixed AnnualIn-depth guide
10 November · UNESCO / international observance
UNESCO 31 C/Resolution 20
Source-backedFixed AnnualIn-depth guide
1 March · United Nations / international observance
A/RES/76/265
Source-backedFixed AnnualIn-depth guide
19 June · UN General Assembly resolution-backed awareness observance
United Nations General Assembly resolution A/RES/63/237
Source-backedRule Based AnnualIn-depth guide
Second Thursday in October · Organizer-backed international observance
International Agency for the Prevention of Blindness (IAPB) and the global eye-health community
Source-backedRule Based AnnualIn-depth guide
First Friday in October annually · Global / World Smile Day Foundation tradition
The Harvey Ball World Smile Foundation states that Harvey Ball created World Smile Day in 1999, that it is held on the first Friday in October, and that the Foundation now sponsors the obse…
Source-backedFixed AnnualIn-depth guide
16 July · Decentralized snake awareness and conservation observance
Government and zoo sources repeatedly observe World Snake Day on 16 July, including India’s National Zoological Park in 2023 and 2025 and a 2026 zoo program. No single creator, founding ins…
Source-backedRule Based AnnualIn-depth guide
Third Tuesday of March · International Federation of Social Workers global professional observance
IFSW records that member organizations approved an international social work day at the 2004 Adelaide General Meeting, the first World Social Work Day was celebrated in 2007, and the third-…
Source-backedFixed AnnualIn-depth guide
13 June · international softball participation and appreciation observance recognized by the sport’s international governing body
WBSC first-party material verifies June 13, the 1991 Olympic-programme date rationale and continuing federation-level observance; WBSC historical material plus a contemporary ISF announceme…
Source-backedFixed AnnualIn-depth guide
5 December · FAO / United Nations / international observance
A/RES/68/232
Source-backedFixed AnnualIn-depth guide
14 February · organizer-led sound, meditation and wellness observance
World Sound Healing Day / Healing Sounds material identifies February 14, Jonathan Goldman / Healing Sounds as creator/facilitator and a 2003 start by annual-edition chronology; WHO guidanc…
Source-backedFixed AnnualIn-depth guide
4–10 October · United Nations international week
A/RES/54/68
Source-backedFixed AnnualIn-depth guide
20 March annually; 20 March 2026 verified · International / Nature Forever Society-led conservation initiative
The official World Sparrow Day site states that the initiative is observed annually on March 20, was initiated in 2010 by Nature Forever Society with partners, and lists March 20, 2026 for…
Source-backedRule Based AnnualIn-depth guide
Fourth Tuesday of February · companion-animal spay/neuter awareness observance
HumaneVMA verifies a fourth-Tuesday-in-February World Spay Day rule and historical humane-society material documents the Spay Day USA predecessor; DDAF currently states a conflicting last-T…
Source-backedFixed AnnualIn-depth guide
15 March · global public-speaking and ideas-sharing observance coordinated by the World Speech Day not-for-profit organization
World Speech Day first-party material verifies Simon Gibson’s 2015 launch at the Athens Democracy Forum, annual March 15 recurrence and continuing organizer stewardship across a decentraliz…
Source-backedFixed AnnualIn-depth guide
25 October · Organizer-backed international observance
International Federation for Spina Bifida and Hydrocephalus (IF)
Source-backedFixed AnnualIn-depth guide
16 October · international spinal-health awareness observance
World Spine Day campaign / World Federation of Chiropractic network
Source-backedFixed AnnualIn-depth guide
2 July annually · International Sports Press Association (AIPS) / professional observance
AIPS states that 2 July each year has been designated World Sports Journalists Day to mark the association’s foundation.
Source-backedFixed AnnualIn-depth guide
14 October · Organizer-backed international observance
International Electrotechnical Commission (IEC), International Organization for Standardization (ISO) and International Telecommunication Union (ITU)
Source-backedVariable CustomIn-depth guide
20 October every five years · United Nations international statistics observance
United Nations General Assembly resolutions 64/267 and 69/282
Source-backedFixed AnnualIn-depth guide
11 August · United Nations / international observance
A/RES/77/316
Source-backedFixed AnnualIn-depth guide
20 March annually · International storytelling and cultural observance
A current 2026 Federal Ministry of Culture and Sports page identifies 20 March as World Storytelling Day and describes storytelling’s cultural role.
Source-backedFixed AnnualIn-depth guide
26 November · United Nations / international observance
A/RES/77/286
Source-backedFixed AnnualIn-depth guide
23 April · ITTF/ITTF Foundation-backed global table-tennis participation and inclusion observance
ITTF and ITTF Foundation first-party material verifies annual observance since 2015, former April 6 scheduling, current Foundation stewardship and the official move to April 23 from 2023 to…
Source-backedRule Based AnnualIn-depth guide
Last Saturday of April · WorldTaiChiDay.org-organized global Tai Chi and Qigong education and participation observance
WorldTaiChiDay.org identifies Bill Douglas and Angela Wong Douglas as co-founders, organizes the annual global event, and sets the last-Saturday-in-April rule; a direct founder interview id…
Source-backedFixed AnnualIn-depth guide
27 April · International tapir-awareness and conservation observance
World Tapir Day first-party material verifies annual April 27 observance since 2008 and an organizer/community mission centered on tapir awareness and conservation. A 2018 first-party retro…
Source-backedFixed AnnualIn-depth guide
5 October · Global education observance
UNESCO 27 C/INF.7
Source-backedFixed AnnualIn-depth guide
2 March annually · International / Hollister Confidence Project awareness campaign
Hollister’s corporate material says it created World Teen Mental Wellness Day in 2020 and presents it as an annual 2 March awareness initiative.
Source-backedFixed AnnualIn-depth guide
17 May · ITU / United Nations / international observance
A/RES/60/252
Source-backedFixed AnnualIn-depth guide
21 November · United Nations / international observance
A/RES/51/205
Source-backedFixed AnnualIn-depth guide
17 June · international mathematics, art and pattern-making celebration
Created by author and educator Emily Grosvenor in 2016; corroborated by mathematics/science organizations
Source-backedFixed AnnualIn-depth guide
27 March · International Theatre Institute / international theatre-community observance
International Theatre Institute first-party material verifies that ITI initiated World Theatre Day in 1961, that it has been celebrated annually on March 27 since the first 1962 observance,…
Source-backedFixed AnnualIn-depth guide
22 February · international Girl Guiding and Girl Scouting friendship observance
WAGGGS history records the 1926 World Conference decision creating an annual Thinking Day on 22 February; in 1999 delegates renamed it World Thinking Day.
