The same date is used for locally official Tartan Days in Angus and Aberdeen, Scotland (from 2004); in the latter, it has since shifted into the charity fundraiser Kiltwalk, now running in four Scottish cities.

International Tartan Day in Australia is celebrated on a regional basis in most states on 1 July (or by some community organizations on the nearest Sunday), the anniversary of the Repeal Proclamation of 1782 annulling the Act of Proscription 1746 and its Dress Act, which had made wearing Highland dress (by males) an offense in the Highlands,[11] punishable by up to seven years' penal transportation.

[24] Some clans, notably the McLeods of South Australia, come together in private events to honor their chief, recite Robert Burns, consume haggis, and take part in Highland dancing.

[25] A butcher in Maclean, New South Wales, "the Scottish town in Australia", reportedly celebrates the day by selling haggisburgers.

[2] MacKeracher-Watson, president of the Clan Lamont Society of Canada, petitioned provincial legislatures to recognize April 6 as Tartan Day.

On December 19, 1991, in response to action initiated by the Clans & Scottish Societies of Canada, the Ontario Legislature passed a resolution proclaiming 6 April as Tartan Day, following the example of some other Canadian provinces.

[36] In 2015, Minister of Canadian Heritage Shelly Glover issued a statement in support of National Tartan Day and the Maple Leaf tartan, and tied the event to celebration that year of the 200th anniversary of the birth of the first prime minister of Canada, Sir John A. Macdonald (born in Scotland), and the 50th anniversary of the current flag of Canada, among other events.

Glover wrote of "the contributions of the Scots and their descendants to the social fabric of our country" and "the historical links between Scotland and Canada".

[37][38][39] Originally founded by Richard and Marie Laure, the event developed into a collaboration between L’Équipe du France Celtic Tartan Day (a not-for-profit organization formed for the purpose by its president Jean-François Rebiffé) and Jeux Ecossais de Luzarches (the Highland games association in Luzarches).

Events included a beachfront parade, musical concerts, piping competitions, Highland games, kilt fashion show, and a Franco-Scottish economic roundtable.

Held at the castle Château de la Groulais in Blain (though not always on April 6), it featured a parade through that city, music and dancing, and a crafts fair.

[50] The Angus event, like that in New York, has developed into a full Tartan Week, and has included activities such as exhibitions of local arts and crafts, a farmer's market, local food vendors and formal dinners, a gathering of clans, a golf tournament, archery competition, literary and storytelling events, medieval reenactments, traditional piping and other music, dance (competitive and participatory), regional history exhibitions and presentations, and craft workshops.

[56][full citation needed] Observing various Tartan Day activities in Canada and in the US at the state and county level, a March 8–10, 1996, meeting of Scottish-heritage organization leaders chaired by John H. Napier III, which included Duncan MacDonald of the Caledonian Foundation, and Neil Fraser of the Clans and Scottish Societies of Canada, among others, proposed nationalizing the idea in the US, to unanimous approval of the attendees.

After promotional advertisements were placed in heritage and genealogy publications including The Highlander, Scottish Life, and Family Tree, the first (unofficial) Tartan Day in the United States observed at the national level was on April 6, 1997.

The resolution passed March 20, 1998, "to recognize the outstanding achievements and contributions made by Scottish Americans to the United States";[6] it also referred to the predominance of Scots among the Founding Fathers of the United States and claimed that the American Declaration of Independence was "modelled on" the Scottish Declaration of Arbroath.

Another major one is that held in Washington, DC, which includes a National Tartan Day Symposium featuring notable Scottish and Scottish-American speakers.

Susan McIntosh, a former president of the Council of Scottish Clans & Associations (based in North Carolina) said in 2015 that the event was too thinly attended and media-covered, given its potential, compared to other ethnic celebrations, and an "unfortunate mongrel of a commemoration" because the dates of the parade (on a Saturday nearest April 6 but rarely April 6 itself) are not meaningful to Scots, and because, she stated, the connection between the Declaration of Arbroath and the Declaration of Independence "is faint at best".

[71] Scottish First Minister Jack McConnell attended the New York event in 2002 "to make sure that Scotland is promoted at the highest level during a time when the world will be watching.

[76][77] The 2023 National Tartan Day Symposium in Washington, DC, included a presentation from Chris Thomson, head of the Scottish Government USA consular team.

[79] The government has also sponsored the annual 10K Scotland Run (with a trip to Edinburgh as the prize) during Tartan Week in New York City since 2004.

[90] For 2022, the Stirling-based Forth Valley Chamber of Commerce alone sent 13 Scottish businesses to the New York parade, including Angels' Share Glass, Ardgowan Distillery, Ochil Fudge Pantry, and Quirky Chocolate.

[91] Ian Houston, president of the trade association Scottish Business Network (SBN); John Bleed, US director of the Confederation of British Industry; and Peter Wilson, president of Great Scot International, a wholesale supplier of Scottish goods to US retailers, were all presenters at the Washington, DC, Tartan Day Sympoisum in 2023.

[60] SBN, Scottish Development International, and British–American Business Network have all been directly involved in Tartan Day activities in Texas.