Kensington Palace has announced that Prince Harry and Meghan Markle will marry on 19 May 2018, which falls on a Saturday.
The announcement follows the Palace's confirmation of a spring wedding. It will be located at St George's Chapel in Windsor Castle.
Kensington Palace tweeted: "His Royal Highness Prince Henry of Wales and Ms. Meghan Markle will marry on 19th May 2018.
"Today's announcement follows earlier confirmation of the month of the wedding and its location at St George's Chapel, Windsor Castle," along with a picture of the loved-up couple.
Harry, 33, got down on one knee in November while the couple were making a roast chicken in Nottingham Cottage, Kensington Palace, before announcing the happy news to the world on 27 November.
The Royal household will pay for the wedding, which Hamish Shepard from wedding planning website and app Bridebook predicts would cost £1.5m ($2m).
He told IBTimesUK: ''Meghan and Harry's wedding is expected to cost £1,463,273, and that's not including the honeymoon or the £10m expected security costs involved on top. Their wedding will cost almost 100 times the average cost of a wedding.
''Their highest expenditures are likely to be the catering, drinks and the decor.''
Royal fans have responded to the news of a wedding date, with one excited social media user stating: "Hooray! so excited for a Royal Wedding!!"
Another put: "Just checked my calendar and I'm free so will pencil it in pending the invitation ".
Many are speculating a more relaxed tone, compared to previous royal ceremonies, including his brother Prince William's nuptials to Catherine, Duchess of Cambridge at Westminster Abbey in 2011. In fact, Harry and Markle have said they'd like the public to be involved.
LA-born Markle, who has lived in Toronto, Canada, in recent years, is preparing a permanent move to the UK, where she will live with Harry in the grounds of Kensington Palace until their big day arrives.
Harry's romance continues to modernise the monarchy, because unlike any other unmarried partner of a senior royal family member, Markle will be tucking into roast turkey with the Queen at Sandringham House in Norfolk this Christmas.
Shas also been invited to attend the traditional church service as a gesture of kindness by the Queen.
The Queen's gesture marks great change for the British royal family. No such Christmas invitation was extended to Kate Middleton, Camilla Parker Bowles, Lady Diana Spencer or Mike Tindall before they married into the monarchy.
On whose idea it could have been, royal commentator Richard Fitzwilliams said: "It is certainly what Harry would have wished as Meghan is soon to be a senior member of the royal family. She and Harry will probably stay at Anmer Hall nearby with William and Kate."