World Haemophilia Day observed on April 17. The theme of 2019 WHD is;

The International Day of Forests is held annually on 21 March to raise awareness of the importance of forests to people and their vital role in poverty eradication, environmental sustainability and food security. The theme for 2019 is Forests and Education. The United Nations General Assembly adopted a resolution on 21 December 2012, which declared that 21 March of each year is to be observed as the International Day of Forests.

The International Day of Human Space Flight was observed across the world. The day marks the anniversary of the first ever human space flight undertaken by Yuri Gagarin, a Soviet citizen on April 12, 1961. This day is also celebrated as 'Cosmonautics Day' in Russia since 1963. Gagarin's Vostok 1 space flight executed one orbit around the Earth over 108 minutes and the spacecraft was propelled by Vostok-K launch vehicle.The day was initiated in 2011 by United Nations through resolution, A/RES/65/271.

International Day for Achievers (IDA) observed on 24th March every year to honor the achievers who have shown determination and confidence on their journey.In this regard, achievers from different fields are honored for motivating people to achieve their goals.

World Day for Animals in Laboratories also known as World Lab Animal Day was observed on 24th April for the movement to end the suffering of animals in laboratories around the world and their replacement with advanced scientific non-animal techniques. The adjoining week is known as "World Week for Animals in Laboratories" (WWAIL) which is observed from April 21-28.Hugh Dowding's birthday was chosen as the date of world Laboratory animal Protection Day. He was not only an officer of the Royal Air Force of Great Britain but also a famous animal rights fighter and former president of National Anti-Vivisection Society (NAVS).This Day was established in 1979 by the NAVS. They described the day as an "international day for commemoration" for animals in laboratories.

International Worker's Day also known as Labour Day and May Day, is observed on 1st May every year, to promote and encourage the international labour associations. The theme of International Labour Day 2019 is "Sustainable Pension for all: The Role of Social Partners". Labour Day provides the Labours their right to work for only 8 hours a day.

April 8th is celebrated as International Romani Day. On International Roma Day 2019, the (ERCC) European Roma Rights Centre brings into limelight the grave fact about the 6 million Romani people (living in the EU, European Union) and 4 million living in the enlargement region (Montenegro, Serbia, North Macedonia, Albania, Bosnia and Herzegovina, Kosovo and Turkey) who till date remains the most underprivileged ethnic group of Europe.Romanis, till this day and age, continue to face discrimination on grounds of race, ethnicity, health care, education, employment, public services and social services. The day was initiated during the fourth World Romani Congress of the International Romani Union (IRU) in 1990 to honour the first major international meeting of Romani representatives.

World Thalassaemia Day 2019 was celebrated on May 8 worldwide with a theme of "Universal Access to Quality Thalassaemia Healthcare Services: Building Bridges with and for Patients". The purpose of this day is to honour all patients of thalassaemia and their wards who never gave up despite all odds and also to support researchers who are striving to create an improved quality of life for people with thalassaemia across the world. To celebrate this day, Thalassaemia International Federation (TIF) organised 3 online competitions worldwide with a certain theme. This online competition will include a video challenge, a photo contest, and a story competition.

International Day of Happiness is celebrated every year on March 20. The theme for IDH 2019 is 'Happier Together', focusing on what we have in common, rather than what divides us. Since 2013, the United Nations has celebrated the International Day of Happiness as a way to recognize the importance of happiness in the lives of people around the world.

Maharashtra Day is celebrated every year on 1st May to mark the Maratha speaking region that was founded on 1st May 1960. This year, the state government of Maharashtra organized the main function in Mumbai and celebrated this red-letter day at Shivaji Park, central Mumbai. Most educational institutions like schools, colleges, offices remain closed on this day.

Rajouri Day was observed on 13th April by Indian Army to pay homage to the martyrs who laid down their lives for the liberation of Rajouri district, Jammu and Kashmir. More than 20,000 men, women, and children were massacred till April 13, 1948. he Year 2019 is being celebrated as the 'Year of Next of Kin' to help families of martyrs.