World Bee Day Bees and other pollinators are increasingly under threat from human activities. To raise awareness of the importance of pollinators, the threats they face and their contribution to sustainable development, the UN designated 20 May as World Bee Day. Mother's Day 2019 This year we celebrate Mother's Day on Sunday the 12th of May. The periodic table What is the periodic table and how does it work? The Library 100: the top 100 novels in the world's libraries. What are the most popular novels in the world's libraries today? ANZAC Day 2019 Thursday the 25th of April 2019 marks the 104th anniversary of the landing of Anzac troops at Gallipoli.