International Energy Day is observed annually on ___________.

3rd May is observed worldwide as International Energy Day by The International Energy Agency (IEA).IEA is an autonomous inter-governmental organization based in Paris. It was founded in the framework of the Organisation for Economic Co-operation and Development (OECD) in 1974 after the 1973 oil crisis.The agency works as a policy adviser to its member states and also works with non-member nations like China, India, and Russia.IEA's main focus lies in the "3Es" of effective energy policy.