The correct answer is 8 June. World Brain Tumour Day is observed every year on 8 June with an aim to create awareness about brain tumours. Brain tumor is a mass or growth of abnormal cells in your brain. There are two types of brain tumors -- noncancerous (benign), and cancerous (malignant). According to the National Health Portal, every day worldwide more than 500 new cases are diagnosed with a brain tumour. Additional InformationList of Some important days in June 2022:? DaysEvents1 JuneWorld Milk Day, Global Parents Day4 JuneInternational Day of Innocent Children Victims of Aggression5 JuneWorld Environment Day7 JuneWorld Food Safety Day8 JuneWorld Brain Tumour Day12 JuneWorld Day Against Child Labour14 JuneWorld Blood Donor Day15 JuneWorld Wind Day, World Elder Abuse Awareness Day16 JuneMartyrdom of Guru Arjan Dev17 JuneWorld Day to Combat Desertification and Drought18 JuneAutistic Pride Day, International Picnic Day19 JuneWorld Sauntering Day20 JuneWorld Refugee Day21 JuneWorld Music Day, World Hydrography Day, International Yoga Day23 JuneInternational Olympic Day, United Nations Public Service Day, International Widow's Day26 JuneInternational Day against Drug Abuse and Illicit Trafficking, International Day in Support of Victims of Torture29 JuneNational Statistics Day, International Day of the Tropics30 JuneWorld Asteroid Day