Term 2 starts for public schools in NSW, Victoria, the ACT, and Western Australia

Beginning of World Immunization Week (until 30 April)

International Day of Multilateralism and Diplomacy for Peace

International Youth Solidarity Day

Fashion Revolution Day

Cycling – Liege-Bastogne-Liege one-day classic – Belgium

The Sydney Comedy Festival begins (until 21 May)

Birthdays for Barbra Streisand (1942) and Ash Barty (1996)

Anniversary of:
• the Armenian genocide in the Ottoman Empire (1915)
• the knighting of Winston Churchill by Queen Elizabeth II (1953)
• the launch of the Hubble space telescope into low Earth orbit (1990)
• the Rana Plaza building collapse in Bangladesh which killed 1,134 garment workers (2013)