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The Flag Institute maintains and manages the UK Flag Registry - the only definitive record of the national, supranational, local and community flags flown in the UK and the Crown Dependencies and Overseas Territories.
Union Flag or Union Jack
1st January 1801
Act of Parliament
College of Arms
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all-day Northamptonshire: Feast of St Cr...
Northamptonshire: Feast of St Cr...
Oct 25 all-day
The county day was chosen as part of the vote that also selected the county flag. The other options in the vote can be considered to be other particularly appropriate dates on which the Northamptonshire[...]