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World Health Days and Health Awareness Days in India 2026-27 (Calendar + PDF)

यह लेख हिंदी में पढ़ें

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Indian hospitals plan around close to ninety health days a year, from National Doctors’ Day on 1 July to World Heart Day on 29 September. This calendar lists 93 of them, world health days and Indian national days, for October 2026 to September 2027, by month and by specialty, with the days for doctors, nurses and other professions called out. Pick the few your specialties can genuinely own, brief your team six to eight weeks ahead, and download the PDF to plan the year.

Looking for ideas, not just dates? See the most iconic health campaigns, organised by health day, with what each did, the results, and what Indian hospitals can borrow under the NMC 2026 rules.

New to the topic? Start here: PR & Communications sets out the reading order.

Updated 29 October 2026: added a section on WHO’s official world health days, moved World Prematurity Day to WHO’s new date of 15 November, and shortened the month headings.

Jump to a month: October ’26 · November ’26 · December ’26 · January ’27 · February ’27 · March ’27 · April ’27 · May ’27 · June ’27 · July ’27 · August ’27 · September ’27

What are world health days?

World health days are dates set aside each year to focus attention on one health issue, such as TB, blood donation or patient safety. People use the term loosely for any global awareness day. Strictly, the official ones are the global public health days and weeks that WHO Member States have mandated: WHO lists 13 days and 2 weeks on its global health days page. Many other well-known days, such as World Heart Day or World Diabetes Day, are led by international federations, the UN or patient groups, and India’s national days are declared by Indian ministries.

DateWHO official world health day or week
30 JanuaryWorld Neglected Tropical Diseases Day
24 MarchWorld TB Day
7 AprilWorld Health Day
14 AprilWorld Chagas Disease Day
24 to 30 AprilWorld Immunization Week
25 AprilWorld Malaria Day
31 MayWorld No Tobacco Day
14 JuneWorld Blood Donor Day
25 JulyWorld Drowning Prevention Day
28 JulyWorld Hepatitis Day
17 SeptemberWorld Patient Safety Day
15 NovemberWorld Prematurity Day
17 NovemberWorld Cervical Cancer Elimination Day
18 to 24 NovemberWorld AMR Awareness Week
1 DecemberWorld AIDS Day

The month tables below carry the WHO days that Indian hospitals actually campaign on, plus the federation, UN and Indian national days. World Neglected Tropical Diseases Day, World Chagas Disease Day and World Drowning Prevention Day are not in the month tables because few Indian hospitals run campaigns on them; add them if your hospital has a programme in those areas. For how to turn a day into coverage rather than a greeting post, see newsjacking and health awareness days, and the glossary entry on health awareness days gives the short definition.

Short · 0:14

Hospitals: stop posting on every health day #shorts

Hospitals: stop posting on every health day.

Video page, chapters & transcript →Narrated with an AI voice
Read the transcript

Four or five well-run days a quarter beat a post on every date.

Match your services.

Have a doctor willing to speak.

And use India's dates, not foreign ones.

Full guide on gauravphogat.com.

Why an India-specific calendar

Most health day lists online are written for the US or the UK. Copy them and you end up wishing doctors on the wrong date: the US marks its doctors’ day in March, India marks National Doctors’ Day on 1 July. Several Indian days have also moved or doubled. Ayurveda Day, first marked in 2016 on Dhanvantari Jayanti (Dhanteras), has had a fixed date, 23 September, since 2025, after a Gazette notification in March 2025. National Deworming Day runs twice a year, in February and August. Indian Organ Donation Day moved from 27 November to 3 August in 2023, marking India’s first deceased-donor heart transplant on 3 August 1994 (source).

This calendar keeps three kinds of day: national days declared in India, days that recognise healthcare professions, and the global WHO and UN days that Indian hospitals actually run campaigns on. It leaves out days that have no real footprint here. Dates for fixed days repeat every year; days set by a rule, such as the second Thursday of October for World Sight Day, are worked out for 2026 and 2027.

Days for doctors, nurses and other healthcare professionals

These are the days to recognise your own people, inside the hospital and in public. Patients respond to them too, because they put a face on the institution. Get consent from anyone you feature.

DayDateWho it recognises
National Doctors’ DayThu 1 Jul 2027All doctors. Marks the birth and death anniversary of Dr B. C. Roy.
International Nurses DayWed 12 May 2027Nurses. Florence Nightingale’s birthday; the National Florence Nightingale Awards honour Indian nurses.
International Day of the MidwifeWed 5 May 2027Midwives and labour room teams.
World Family Doctor DayWed 19 May 2027General practitioners and family physicians.
World Pharmacists DaySat 25 Sep 2027Hospital and retail pharmacists.
World Physiotherapy DayWed 8 Sep 2027Physiotherapists and rehabilitation teams.
World Radiography DaySun 8 Nov 2026Radiographers and imaging technologists.
World Anaesthesia DayFri 16 Oct 2026Anaesthesiologists and OT teams.
World Patient Safety DayFri 17 Sep 2027Quality, nursing and every clinical team.
World Trauma DaySat 17 Oct 2026Emergency, trauma and ambulance teams.

Month by month: October 2026 to September 2027

India-specific days are marked. For month-long observances, plan a series rather than a single post.

Health days in October 2026

DateObservanceSpecialty
Thu 1 OctNational Voluntary Blood Donation Day (India)Haematology and blood bank
Thu 1 OctInternational Day of Older PersonsGeriatrics
All monthBreast Cancer Awareness Month
all of October
Oncology
Thu 8 OctWorld Sight Day
second Thursday of October
Ophthalmology
Sat 10 OctWorld Mental Health DayPsychiatry and psychology
Sat 10 OctWorld Hospice and Palliative Care Day
second Saturday of October
Palliative care
Mon 12 OctWorld Arthritis DayRheumatology and orthopaedics
Fri 16 OctWorld Anaesthesia DayAnaesthesiology
Fri 16 OctWorld Spine DaySpine and orthopaedics
Sat 17 OctWorld Trauma DayEmergency and trauma care
Sun 18 OctWorld Menopause DayGynaecology
Tue 20 OctWorld Osteoporosis DayOrthopaedics
Sat 24 OctWorld Polio DayPaediatrics and public health
Thu 29 OctWorld Stroke DayNeurology

Month-long observances: Breast Cancer Awareness Month (in the table above).

See the campaigns: Breast Cancer Awareness Month, Global Handwashing Day, Restart a Heart Day, World Polio Day, World Stroke Day

Health days in November 2026

DateObservanceSpecialty
Sat 7 NovNational Cancer Awareness Day (India)Oncology
Sun 8 NovWorld Radiography DayRadiology
Thu 12 NovWorld Pneumonia DayPulmonology and paediatrics
Sat 14 NovWorld Diabetes DayEndocrinology
Sat 14 NovChildren’s Day (India)Paediatrics
Sun 15 NovWorld Day of Remembrance for Road Traffic Victims
third Sunday of November
Emergency and trauma care
Sun 15 NovWorld Prematurity Day (WHO moved it from 17 November to 15 November from 2026; WHO)Neonatology
Sun 15 Nov to Sat 21 NovNational Newborn Week (India)Neonatology
Tue 17 NovNational Epilepsy Day (India)Neurology
Tue 17 NovWorld Cervical Cancer Elimination DayOncology and gynaecology
Wed 18 NovWorld COPD Day
third Wednesday of November
Pulmonology
Wed 18 Nov to Tue 24 NovWorld AMR Awareness WeekInfectious diseases
Thu 19 NovWorld Pancreatic Cancer Day
third Thursday of November
Oncology and gastroenterology
Thu 19 NovInternational Men’s DayMen’s health
Thu 19 NovWorld Toilet Day
UN day since 2013
Public health and sanitation

Month-long observances: Lung Cancer, Pancreatic Cancer and Stomach Cancer Awareness Months; Movember for men’s health, including prostate and testicular cancer and mental health; Diabetes Awareness Month (National Diabetes Month in the US). These are global or US-led months, not Indian government observances.

See the campaigns: Movember, World Diabetes Day, Skin Cancer Awareness

Health days in December 2026

DateObservanceSpecialty
Tue 1 DecWorld AIDS DayInfectious diseases
Thu 3 DecInternational Day of Persons with DisabilitiesRehabilitation
Sat 12 DecUniversal Health Coverage DayHealth policy

See the campaigns: World AIDS Day

Health days in January 2027

DateObservanceSpecialty
Sat 30 JanAnti-Leprosy Day (India)Dermatology and public health

Month-long observances: Cervical Cancer Awareness Month and Glaucoma Awareness Month (US national health observances, widely used by Indian oncology and eye hospitals).

See the campaigns: Bell Let’s Talk Day

Health days in February 2027

DateObservanceSpecialty
Thu 4 FebWorld Cancer DayOncology
Wed 10 FebNational Deworming Day (India)
February round
Paediatrics
Thu 11 FebNational Unani Day (India)AYUSH
Sun 28 FebRare Disease Day
last day of February
Genetics and rare diseases

See the campaigns: World Cancer Day, Time to Talk Day, National Wear Red Day, National Deworming Day

Health days in March 2027

DateObservanceSpecialty
Wed 3 MarWorld Hearing DayENT
Thu 4 MarWorld Obesity DayBariatrics and endocrinology
Mon 8 MarInternational Women’s DayWomen’s health
Thu 11 MarWorld Kidney Day
second Thursday of March
Nephrology and urology
Tue 16 MarNational Vaccination Day (India)Paediatrics and public health
Sat 20 MarWorld Oral Health DayDental
Sun 21 MarWorld Down Syndrome DayPaediatrics and genetics
Wed 24 MarWorld TB DayPulmonology

Month-long observances: Colorectal Cancer Awareness Month.

See the campaigns: World Down Syndrome Day, World TB Day

Health days in April 2027

DateObservanceSpecialty
Fri 2 AprWorld Autism Awareness DayChild development
Wed 7 AprWorld Health Day
WHO announces the theme
All specialties
Sat 10 AprWorld Homoeopathy DayAYUSH
Sun 11 AprNational Safe Motherhood Day (India)Obstetrics
Sun 11 AprWorld Parkinson’s DayNeurology
Sat 17 AprWorld Haemophilia DayHaematology
Mon 19 AprWorld Liver DayHepatology and gastroenterology
Sat 24 Apr to Fri 30 AprWorld Immunization WeekPaediatrics and public health
Sun 25 AprWorld Malaria DayInfectious diseases

Month-long observances: Parkinson’s Awareness Month.

See the campaigns: World Autism Awareness Day, World Malaria Day

Health days in May 2027

DateObservanceSpecialty
Tue 4 MayWorld Asthma Day
first Tuesday of May
Pulmonology
Wed 5 MayWorld Hand Hygiene DayInfection control
Wed 5 MayInternational Day of the MidwifeObstetrics and midwifery
Sat 8 MayWorld Thalassaemia DayHaematology
Wed 12 MayInternational Nurses Day
Florence Nightingale’s birthday
Nursing
Sun 16 MayNational Dengue Day (India)Infectious diseases
Mon 17 MayWorld Hypertension DayCardiology
Wed 19 MayWorld Family Doctor DayFamily medicine
Tue 25 MayWorld Thyroid DayEndocrinology
Sat 29 MayWorld Digestive Health DayGastroenterology
Mon 31 MayWorld No Tobacco DayOncology and pulmonology

Month-long observances: Mental Health Awareness Month (US-led).

See the campaigns: World Hand Hygiene Day, Menstrual Hygiene Day, World No Tobacco Day

Health days in June 2027

DateObservanceSpecialty
Mon 7 JunWorld Food Safety DayPublic health and nutrition
Mon 14 JunWorld Blood Donor DayHaematology and blood bank
Sat 19 JunWorld Sickle Cell DayHaematology
Mon 21 JunInternational Day of Yoga
India-led UN day
Wellness and AYUSH

See the campaigns: World Blood Donor Day, Global ALS Day

Health days in July 2027

DateObservanceSpecialty
Thu 1 JulNational Doctors’ Day (India)
birth and death anniversary of Dr B. C. Roy
All doctors
Tue 6 JulWorld Zoonoses DayInfectious diseases
Sun 11 JulWorld Population DayFamily planning
Thu 22 JulWorld Brain DayNeurology
Sun 25 JulWorld IVF DayFertility
Tue 27 JulWorld Head and Neck Cancer DayOncology and ENT
Wed 28 JulWorld Hepatitis DayHepatology

Month-long observances: Sarcoma Awareness Month (US-led).

Health days in August 2027

DateObservanceSpecialty
Sun 1 Aug to Sat 7 AugWorld Breastfeeding WeekObstetrics and paediatrics
Tue 3 AugIndian Organ Donation Day (India)Transplant
Wed 4 AugBone and Joint Day (India)
observed by the Indian Orthopaedic Association
Orthopaedics
Tue 10 AugNational Deworming Day (India)
August round
Paediatrics
Wed 25 Aug to Wed 8 SepNational Eye Donation Fortnight (India)Ophthalmology

Month-long observances: National Immunization Awareness Month (US-led).

See the campaigns: Organ Donation Day

Health days in September 2027

DateObservanceSpecialty
Wed 1 Sep to Tue 7 SepNational Nutrition Week (India)Nutrition and dietetics
All monthChildhood Cancer Awareness Month
all of September
Paediatric oncology
Wed 8 SepWorld Physiotherapy DayPhysiotherapy
Fri 10 SepWorld Suicide Prevention Day
always include a helpline
Psychiatry and psychology
Fri 17 SepWorld Patient Safety DayQuality and patient safety
Tue 21 SepWorld Alzheimer’s DayNeurology and geriatrics
Thu 23 SepAyurveda Day (India)
fixed date from 2025
AYUSH
Sat 25 SepWorld Pharmacists DayPharmacy
Sat 25 SepWorld Lung DayPulmonology
Sun 26 SepWorld Contraception DayGynaecology and family planning
Tue 28 SepWorld Rabies DayInfectious diseases
Wed 29 SepWorld Heart DayCardiology

Month-long observances: Childhood Cancer Awareness Month (in the table above); World Alzheimer’s Month; Rashtriya Poshan Maah (India; the 2025 edition was launched on 17 September, so confirm each year’s dates).

See the campaigns: World Suicide Prevention Day, World Heart Day

Health days by specialty

If you run a department or a single-specialty clinic, start here. These are the days where your doctors have the most credible voice.

SpecialtyDays
AYUSHNational Unani Day (Thu 11 Feb); World Homoeopathy Day (Sat 10 Apr); Ayurveda Day (Thu 23 Sep)
All doctorsNational Doctors’ Day (Thu 1 Jul)
All specialtiesWorld Health Day (Wed 7 Apr)
AnaesthesiologyWorld Anaesthesia Day (Fri 16 Oct)
Bariatrics and endocrinologyWorld Obesity Day (Thu 4 Mar)
CardiologyWorld Hypertension Day (Mon 17 May); World Heart Day (Wed 29 Sep)
Child developmentWorld Autism Awareness Day (Fri 2 Apr)
DentalWorld Oral Health Day (Sat 20 Mar)
Dermatology and public healthAnti-Leprosy Day (Sat 30 Jan)
ENTWorld Hearing Day (Wed 3 Mar)
Emergency and trauma careWorld Trauma Day (Sat 17 Oct); World Day of Remembrance for Road Traffic Victims (Sun 15 Nov)
EndocrinologyWorld Diabetes Day (Sat 14 Nov); World Thyroid Day (Tue 25 May)
Family medicineWorld Family Doctor Day (Wed 19 May)
Family planningWorld Population Day (Sun 11 Jul)
FertilityWorld IVF Day (Sun 25 Jul)
GastroenterologyWorld Digestive Health Day (Sat 29 May)
Genetics and rare diseasesRare Disease Day (Sun 28 Feb)
GeriatricsInternational Day of Older Persons (Thu 1 Oct)
GynaecologyWorld Menopause Day (Sun 18 Oct)
Gynaecology and family planningWorld Contraception Day (Sun 26 Sep)
HaematologyWorld Haemophilia Day (Sat 17 Apr); World Thalassaemia Day (Sat 8 May); World Sickle Cell Day (Sat 19 Jun)
Haematology and blood bankNational Voluntary Blood Donation Day (Thu 1 Oct); World Blood Donor Day (Mon 14 Jun)
Health policyUniversal Health Coverage Day (Sat 12 Dec)
HepatologyWorld Hepatitis Day (Wed 28 Jul)
Hepatology and gastroenterologyWorld Liver Day (Mon 19 Apr)
Infection controlWorld Hand Hygiene Day (Wed 5 May)
Infectious diseasesWorld AMR Awareness Week (Wed 18 Nov to Tue 24 Nov); World AIDS Day (Tue 1 Dec); World Malaria Day (Sun 25 Apr); National Dengue Day (Sun 16 May); World Zoonoses Day (Tue 6 Jul); World Rabies Day (Tue 28 Sep)
Men’s healthInternational Men’s Day (Thu 19 Nov)
NeonatologyNational Newborn Week (Sun 15 Nov to Sat 21 Nov); World Prematurity Day (Sun 15 Nov)
Nephrology and urologyWorld Kidney Day (Thu 11 Mar)
NeurologyWorld Stroke Day (Thu 29 Oct); National Epilepsy Day (Tue 17 Nov); World Parkinson’s Day (Sun 11 Apr); World Brain Day (Thu 22 Jul)
Neurology and geriatricsWorld Alzheimer’s Day (Tue 21 Sep)
NursingInternational Nurses Day (Wed 12 May)
Nutrition and dieteticsNational Nutrition Week (Wed 1 Sep to Tue 7 Sep)
ObstetricsNational Safe Motherhood Day (Sun 11 Apr)
Obstetrics and midwiferyInternational Day of the Midwife (Wed 5 May)
Obstetrics and paediatricsWorld Breastfeeding Week (Sun 1 Aug to Sat 7 Aug)
OncologyBreast Cancer Awareness Month (All month); National Cancer Awareness Day (Sat 7 Nov); World Pancreatic Cancer Day (Thu 19 Nov); World Cancer Day (Thu 4 Feb)
Oncology and ENTWorld Head and Neck Cancer Day (Tue 27 Jul)
Oncology and gynaecologyWorld Cervical Cancer Elimination Day (Tue 17 Nov)
Oncology and pulmonologyWorld No Tobacco Day (Mon 31 May)
OphthalmologyWorld Sight Day (Thu 8 Oct); National Eye Donation Fortnight (Wed 25 Aug to Wed 8 Sep)
OrthopaedicsWorld Osteoporosis Day (Tue 20 Oct); Bone and Joint Day (Wed 4 Aug)
Paediatric oncologyChildhood Cancer Awareness Month (All month)
PaediatricsChildren’s Day (Sat 14 Nov); National Deworming Day (Wed 10 Feb); National Deworming Day (Tue 10 Aug)
Paediatrics and geneticsWorld Down Syndrome Day (Sun 21 Mar)
Paediatrics and public healthWorld Polio Day (Sat 24 Oct); National Vaccination Day (Tue 16 Mar); World Immunization Week (Sat 24 Apr to Fri 30 Apr)
Palliative careWorld Hospice and Palliative Care Day (Sat 10 Oct)
PharmacyWorld Pharmacists Day (Sat 25 Sep)
PhysiotherapyWorld Physiotherapy Day (Wed 8 Sep)
Psychiatry and psychologyWorld Mental Health Day (Sat 10 Oct); World Suicide Prevention Day (Fri 10 Sep)
Public health and nutritionWorld Food Safety Day (Mon 7 Jun)
Public health and sanitationWorld Toilet Day (Thu 19 Nov)
PulmonologyWorld COPD Day (Wed 18 Nov); World TB Day (Wed 24 Mar); World Asthma Day (Tue 4 May); World Lung Day (Sat 25 Sep)
Pulmonology and paediatricsWorld Pneumonia Day (Thu 12 Nov)
Quality and patient safetyWorld Patient Safety Day (Fri 17 Sep)
RadiologyWorld Radiography Day (Sun 8 Nov)
RehabilitationInternational Day of Persons with Disabilities (Thu 3 Dec)
Rheumatology and orthopaedicsWorld Arthritis Day (Mon 12 Oct)
Spine and orthopaedicsWorld Spine Day (Fri 16 Oct)
TransplantIndian Organ Donation Day (Tue 3 Aug)
Wellness and AYUSHInternational Day of Yoga (Mon 21 Jun)
Women’s healthInternational Women’s Day (Mon 8 Mar)

How to plan around these days

  • Choose fewer days. Four or five well-run days a quarter beat a post on every date. Pick days that match services you offer and doctors who are willing to speak.
  • Work back from the date. Brief the team six to eight weeks ahead for PR, four weeks ahead for content and social. Journalists file awareness-day stories days before the date, not on it.
  • Check the theme. WHO and most organisers announce the year’s theme a few weeks ahead. WHO usually sets a new World Health Day theme each year; check the WHO site in March before you plan around it.
  • Bring something new. An aggregated, anonymised view of what a department sees, a free screening camp with clear booking, or a doctor answering the questions patients actually ask. A greeting card creative adds little.
  • Plan the after-care. Any camp or campaign needs a staffed phone line, a booking route and follow-up for people who turn out to need treatment.

What to avoid

  • Cure claims, guarantees and superlatives. Keep to NMC professional conduct rules and ASCI guidelines, and avoid claims restricted by the Drugs and Magic Remedies (Objectionable Advertisements) Act.
  • Patient stories or photos without written, specific consent for the channel and duration.
  • Fear-led messaging on sensitive days. For mental health, suicide prevention, HIV and cancer, use person-first language and, for suicide prevention, always include a helpline.
  • Copying another country’s date for a day India marks differently.

Download the calendar as a PDF

The PDF has the full month-by-month calendar, the professional days, the specialty index and a pre-publish checklist on a few printable pages. Enter your email below and confirm it; the download link arrives in your welcome email. If you want lead-time formulas, owners and status tracking, the Excel health awareness PR calendar does that.

For the PR side of these days, read newsjacking and health awareness days, what health journalists actually want and the hospital press release template pack.

The 60-second version

Sources and further reading

Questions people ask

What are the most important health awareness days in India?

For most hospitals: World Health Day (7 April), National Doctors’ Day (1 July), World Heart Day (29 September), World Mental Health Day (10 October), World Diabetes Day (14 November), World Cancer Day (4 February) and World TB Day (24 March). The right shortlist depends on your specialties; the specialty table above helps you choose.

When is National Doctors’ Day in India?

1 July every year. It marks the birth and death anniversary of Dr B. C. Roy, physician and former Chief Minister of West Bengal. It is different from the US date in March.

When is Nurses Day in India?

India marks International Nurses Day on 12 May, Florence Nightingale’s birthday. The National Florence Nightingale Awards recognise nursing professionals in India.

When is World Health Day 2027, and what is the theme?

World Health Day is on 7 April every year. The World Health Organization announces each year’s theme in the weeks before, so check the WHO website in March before you brief your team.

Is Ayurveda Day on a fixed date now?

Yes. From 2025 the Government of India fixed Ayurveda Day on 23 September. It was earlier linked to Dhanvantari Jayanti, which moves every year.

Which days are specific to India?

National days in this calendar include National Doctors’ Day, National Cancer Awareness Day, National Newborn Week, National Epilepsy Day, Anti-Leprosy Day, National Deworming Day, National Unani Day, National Vaccination Day, National Safe Motherhood Day, National Dengue Day, Indian Organ Donation Day, National Eye Donation Fortnight, National Nutrition Week and Ayurveda Day.

How many awareness days should a hospital run?

Fewer than you think. Four or five well-planned days a quarter, matched to services you offer and doctors who will speak, usually beat a post on every observance. Skipping a day is better than a generic greeting.

How far ahead should we plan?

Six to eight weeks ahead for PR, because journalists file before the day. Four weeks ahead for content and social. Add time for clinical review and any patient consent.

Are the dates the same every year?

Fixed-date days repeat every year. Some days follow a rule: World Sight Day is the second Thursday of October, World Kidney Day the second Thursday of March, World Asthma Day the first Tuesday of May. Those dates change each year.

Can we run offers or free camps on awareness days?

Free screening camps are common and useful if they have a clear booking route and follow-up. Keep any promotion within NMC professional conduct rules and ASCI guidelines, avoid inducement-style language and check with your legal team. This is not legal advice.

How should we handle sensitive days?

Give them a clinical lead. Use person-first language, avoid fear-led creative, never publish identifiable patient information without written consent, and always include a helpline on suicide prevention content.

What is the difference between the PDF and the Excel calendar?

The PDF is a printable planning calendar by month and by specialty. The Excel PR calendar adds source links for every day, lead-time formulas, owners, clinical reviewers and a status tracker.

How do I get the PDF?

Enter your email in the form on this page and confirm it. Your welcome email carries the download link. It is free.

What are world health days?

They are dates set each year to draw attention to one health issue. The official ones are the 13 global public health days and 2 weeks mandated by WHO Member States, such as World TB Day (24 March), World Health Day (7 April), World No Tobacco Day (31 May), World Blood Donor Day (14 June), World Hepatitis Day (28 July), World Patient Safety Day (17 September) and World AIDS Day (1 December). Many other days are run by federations, the UN or national governments.

When is World Prematurity Day?

15 November. It was long marked on 17 November; after the World Health Assembly added it to WHO’s official calendar in 2025, WHO moved it to 15 November to avoid clashing with other mandated days.

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