• Wild Koala Day

    3 May

    Wild Koala Day is observed annually on 3 May in Australia to highlight the importance of conserving wild koalas. Established in 2016 by independent koala conservation groups, the day promotes awareness of koalas’ unique biology and the threats they face. Koalas are arboreal marsupials native to coastal regions of eastern and southern Australia, primarily feeding on eucalyptus leaves. The species is listed as vulnerable due to habitat loss, urbanisation, and other environmental pressures. Activities on Wild Koala Day include tree planting, fundraising, and educational events to support koala protection.

  • Mothers Who Lost Children Day

    3 May 2026

    The International Day for Mothers Who Have Lost Children is observed on the first Sunday of May each year. Originating in Australia through Carley Marie Dudley, it recognises mothers grieving the loss of children due to stillbirth, miscarriage, sudden infant death syndrome, or other causes. The day provides a space for mothers to share their experiences, memories, and emotions openly. It aims to break the stigma surrounding child loss and support healing through acknowledgement and community. The observance honours the enduring pain of loss and the identity of mothers despite their children no longer being present.

  • International Firefighters' Day

    4 May

    International Firefighters’ Day is observed annually on 4 May to honour firefighters who protect lives, property, and ecosystems from fire. Established following the tragic deaths of five Australian firefighters in a 1998 forest fire, the day commemorates their sacrifice and recognises the professionalism and bravery of firefighters globally. The date coincides with the feast day of Saint Florian, the patron saint of firefighters. Activities include memorial ceremonies, educational events, and public awareness campaigns on fire safety.

  • Sleep Apnoea Awareness Day

    5 May

    Sleep Apnoea Awareness Day is observed annually in Australia on 5 May to increase understanding of sleep apnoea, a disorder characterised by repeated breathing interruptions during sleep. Symptoms include snoring, fatigue, and concentration difficulties, often unnoticed by sufferers but observed by partners. Causes range from nasal congestion to neurological issues, with risk factors including genetics and obesity. Treatments vary from lifestyle changes to CPAP therapy, invented by Australian doctor Colin Sullivan. The day is organised by Sleep Apnoea Australia to promote education and support.

  • International Disability Rights Day

    5 May

    International Disability Rights Day is observed annually on 5 May to raise awareness about the rights of people with disabilities and combat discrimination. Originating in 1992 with coordinated actions across 17 European countries, the day focuses on equal rights in employment, education, and accessibility. The United Nations Convention on the Rights of Persons with Disabilities, effective since 2008, supports full participation and legal protection for people with disabilities. In Australia, disability rights are supported through legislation, national strategies, and the National Disability Insurance Scheme.

  • International No-Diet Day

    6 May

    International No-Diet Day is observed annually on 6 May, originating in 1992 in the United Kingdom. Founded by Mary Evans Young, the day challenges diet culture and promotes body acceptance and healthy living at any size. It highlights the dangers of restrictive diets and eating disorders while opposing weight-based discrimination. The day is symbolised by a light blue ribbon and is supported internationally, including by feminist groups and health organisations in Australia. It honours those who have struggled with eating disorders or weight-related surgeries.

  • Cosmopolitan Cocktail Day

    7 May

    Cosmopolitan Cocktail Day is celebrated every 7 May, recognising the iconic vodka-based cocktail classified as a modern classic by the International Bartenders Association. Originating from New York, the drink gained popularity through media exposure and is known for its light pink colour and refreshing taste. The cocktail combines vodka, triple sec, lime, and cranberry juice, often garnished with lime or cranberry. In Australia, the day is marked with special events and promotions in bars, especially in Sydney and Melbourne.

  • Amyloidosis Awareness Day

    8 May

    Amyloidosis Awareness Day is observed annually in Australia on 8 May to increase understanding of amyloidosis, a group of rare diseases caused by abnormal protein deposits called amyloids. The condition affects various organs, commonly the kidneys and heart, and can lead to serious complications. Diagnosis often requires tissue biopsy due to nonspecific early symptoms. Treatment focuses on preventing new amyloid formation and managing symptoms, as no cure or removal method exists. The day was established in 2016 by Trisha Gardiner-Wilson in memory of her husband Adam, who died from amyloidosis.

  • Goku Day

    9 May

    Goku Day is celebrated on 9 May to honour Son Goku, the main character of the Dragon Ball franchise created by Akira Toriyama. The franchise includes manga, anime, video games, and more, inspired by martial arts and classic literature. Established by Bird Studio and certified by the Japanese Association of Commemorative Dates, the day features events worldwide, including in Australia. Fans gather for cosplay, exhibitions, and discussions, promoting Japanese animation and culture.

  • Clean Room Day

    10 May

    Clean Room Day is an unofficial annual event held on 10 May that promotes cleanliness and hygiene in residential spaces. It symbolises the spring tradition of tidying and discarding old items, a practice common across many cultures. The day encourages family participation, often accompanied by music and themed activities, to make cleaning both beneficial and enjoyable. Psychologists highlight that maintaining order in the home positively impacts mental health. In Australia, spring cleaning occurs during September to November, with an emphasis on eco-friendly methods and community involvement.

  • Mother's Day

    10 May 2026

    Mother’s Day is celebrated on the second Sunday of May in over eighty countries, including Australia and the United States. The tradition began in the USA in 1908, initiated by Anna Jarvis to honour her late mother. The day is marked by giving flowers, cards, and gifts to mothers and maternal figures. In both the USA and Australia, carnations are symbolic flowers worn to represent living and deceased mothers. The holiday has a strong family focus and includes various cultural and charitable activities.

  • Stomach Freedom Day

    11 May

    Stomach Freedom Day, observed annually on 11 May, invites people to enjoy food without restrictions, promoting freedom from dieting trends. Originating from American creators Thomas Roy and his wife Ruth, the day encourages trying new foods or indulging in favourites. In Australia, the celebration is popular among barbecue lovers and features special menus in Melbourne and Sydney. The day also highlights the importance of stomach health and balanced eating habits.

  • Chronic Fatigue Syndrome Awareness Day

    12 May

    Chronic Fatigue Syndrome Awareness Day is observed annually on 12 May to raise awareness about ME/CFS, a condition characterised by prolonged fatigue not relieved by rest. Symptoms include apathy, mood decline, muscle weakness, and sleep disturbances. The syndrome affects people of all ages and backgrounds, with a higher prevalence among women and those in high-responsibility professions. Diagnosis is challenging due to symptom overlap with other illnesses. Treatment involves a comprehensive approach focusing on rest, physical activity regulation, and supportive therapies.

  • World Cocktail Day

    13 May

    World Cocktail Day is observed on 13 May to commemorate the first published definition of a cocktail as an alcoholic beverage. The term cocktail generally refers to mixed drinks combining spirits with various mixers such as bitters, juices, and syrups. The original definition appeared in The Balance and Columbian Repository in 1806, describing a cocktail as a stimulating liquor made from spirits, sugar, water, and bitters. The day encourages the celebration of cocktail culture alongside responsible alcohol consumption. In Australia, the day coincides with National Cocktail Day and is marked by events promoting both local and international cocktail traditions.

  • Chihuahua Appreciation Day

    14 May

    International Chihuahua Appreciation Day is observed annually on 14 May to celebrate the Chihuahua dog breed. Originating from the Mexican state of Chihuahua, this breed is known as the smallest recognised dog breed by some kennel clubs. The breed descends from the ancient Techichi dogs bred by the Toltec culture. The day was established by Nadia Alterio in 2011 to honour her Chihuahua and promote the breed worldwide. In Australia, Chihuahuas are popular urban pets, with local clubs and veterinary organisations supporting their care and health.

  • Ascension of Christ

    14 May 2026

    The Ascension of Christ is a Christian feast celebrating Jesus Christ’s ascent to heaven 40 days after his resurrection. It marks the conclusion of Jesus’ appearances to his disciples and the beginning of his heavenly ministry. This event is closely linked with the promise of the Holy Spirit and the festival of Pentecost. The Ascension affirms both the humanity and divinity of Jesus and his ongoing role in the spiritual life of believers. It is observed in various Christian denominations with special liturgies, prayers, and processions.

  • Conscientious Objectors Day

    15 May

    International Conscientious Objectors Day is observed annually on 15 May to recognise individuals who refuse military service due to moral or religious beliefs. Established in 1981 during a meeting in Copenhagen, the day highlights the historical persecution of conscientious objectors, notably under Nazi military justice. The German Bundestag’s 1997 resolution condemned Nazi-era sentences against objectors as unjust. Memorials, such as the one at Buchenwald concentration camp, commemorate those who suffered or died for their stance. The day also draws attention to the legal recognition and protection of conscientious objection in many countries, including Australia.

  • International Day of Light

    16 May

    The International Day of Light, observed annually on 16 May, recognises the importance of light in various fields including science, culture, medicine, and sustainable development. Established by UNESCO in 2017, the day honours the first successful laser demonstration by Theodore Maiman in 1960. The celebration promotes awareness of light-based technologies and their contributions to education, communication, and energy efficiency. It also supports the United Nations’ sustainable development goals and encourages the preservation of cultural heritage through light technologies.

  • International Day of Peaceful Coexistence

    16 May

    The International Day of Peaceful Coexistence, proclaimed by the United Nations General Assembly on 16 May, encourages tolerance, solidarity, and mutual understanding among diverse peoples. It is based on principles of respecting differences and resolving disputes through peaceful negotiations in line with international law. The day supports efforts to maintain unity amid cultural and religious diversity and aligns with the UN’s Sustainable Development Goal 16 for peace and justice. Member states are urged to hold educational activities to promote a culture of peace and non-violence worldwide.

  • Pinot Grigio Day

    17 May

    Pinot Grigio Day is celebrated every 17 May to recognise the popular Italian white wine style made from the Pinot Gris grape. Originating from France, the grape is known as Pinot Grigio in Italy and produces a light, refreshing wine with citrus and green apple flavours. The day was established by the Cavit company, a sustainable winery founded in 1957 in Trentino, Italy. Pinot Grigio pairs well with seafood, pasta, and poultry dishes, making it a versatile choice for many meals.

  • Marshmallow Day Australia

    18 May

    Marshmallow Day in Australia is observed on 18 May, primarily in Melbourne. The marshmallow confection is made from sugar, water, and gelatin whipped into a fluffy foam, containing about half air for its soft texture. Its name derives from the marshmallow plant, originally used in early recipes. The sweet has evolved from a labour-intensive French dessert to a mass-produced treat enjoyed in various forms, including toasted over fires and as a key ingredient in desserts and snacks.