Tonga will celebrate the 150th anniversary of its Constitution on 4 November with a week-long celebration, that will also recognise the 55th anniversary of Tonga's diplomatic ties with Australia and New Zealand, and the 10th anniversary of the reign of King Tupou VI.
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Results for Tonga Constitution Day
Thursday 1 May 2025
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Nuku'alofa, Tonga

Thursday 4 November 2021
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Nuku'alofa, Tonga
Tonga will observe Constitution Day, November 4 with a public holiday on Monday, November 8, marking the 146th anniversary of the enactment of the Constitution by HM King Tupou I on November 4, 1875.

Wednesday 31 October 2018
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Nuku'alofa, Tonga
Tonga will observe Constitution Day with a public holiday on Monday, November 5 marking the 143rd anniversary of Tonga's Constitution this year, which was first enacted by HM King Tupou I on November 4, 1875.

Wednesday 8 November 2017
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Nuku'alofa, Tonga
Tonga observed Constitution Day with a holiday on Monday 6 November, this year marking the 142nd anniversary of Tonga's constitution, which was was first enacted by HM King Tupou I on November 4, 1875.

Thursday 6 November 2014
Nuku'alofa, Tonga
Tongans had a day-off on Monday, November 3 as the Kingdom observed a national holiday celebrating its 139 year-old Constitution - the second oldest in the Southern Hemisphere.