Affirmation ceremonies may be included as part of civic occasions, community events, school assemblies or on days of national significance such as Australia Day (26 January), Harmony Day (21 March), Constitution Day (9 July), Wattle Day (1 September) and Australian Citizenship Day (17 September).
He was an active office-bearer in the Royal and Linnean societies of New South Wales, the (Royal) Australian Historical Society, the Wattle Day League, the Horticultural Society and Horticultural Association, the Field Naturalists’ Society, the Town Planning Association of New South Wales, and the Australasian Association for the Advancement of Science.
In 1992 the 1 September was formally declared as "National Wattle Day" by then Minister for the Environment, Ros Kelly at a ceremony held at the Australian National Botanic Gardens.
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The first known use of wattle as a meaningful emblem in the Australian colonies dates back to the early days of Tasmania in 1838, when the wearing of silver wattle sprigs was encouraged especially on the occasion of an anniversary celebration of the 17th-century European discovery of the island.
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