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Queen Elizabeth II will be the last guest and member of the royal family to arrive at the wedding.

• The final countdown is on to Prince Harry and Meghan Markle's royal wedding this Saturday, May 19.
• Kensington Palace has detailed the exact timings of the arrivals of members of the public, wedding guests, and the royal family.
• Her Majesty the Queen will be the last of the royals to arrive.

The world is giddy with excitement in the final countdown to Prince Harry and Meghan Markle's royal wedding this Saturday, May 19 - and Kensington Palace has detailed the exact timings of the arrivals of each member of the wedding party.

The wedding officially begins at 12 p.m. local time, but most channels broadcasting the big day will begin live coverage of the arrivals of the members of public, guests, and royal family hours before.

Here's a rundown of exactly what time people are arriving, according to a notice issued by the palace:

Friday May 19

On the eve of her wedding day, Meghan Markle, accompanied by her mother Doria Ragland, will head to the $2,000 per night Cliveden House Hotel. The pair are expected to arrive in the early evening. Meanwhile, Harry and the Duke of Cambridge will head to Coworth Park hotel.

Saturday May 19

9 a.m.

The 1,200 members of the public who were invited to watch the wedding from inside the grounds of Windsor Castle begin to arrive.

9.30 a.m. - 11 a.m.

The 600 guests invited to the ceremony at St George's Chapel begin to arrive by coach at the castle's Round Tower, from where they will walk to the chapel, entering through the South Door.

11.20 a.m.

Members of the royal family begin to arrive - some walking, some in cars - and they will all enter the chapel through the Galilee Porch.

Meanwhile, Markle and her mother will depart the Cliveden House Hotel in a car that will pass along the Long Walk, providing onlookers with a glimpse of the bride. The car will drop Ragland at the castle from where she will head on to the chapel, while Markle will be joined by some of her bridesmaids and page boys before continuing on to the church.

11.30 a.m.

Prince Harry and brother and best man William arrive at St George's Chapel around 10 minutes after the royal family begin arriving at the chapel, according to Reuters, most likely on foot, and will enter via the West Steps. The pair will have greeted some of the 200 charity representatives gathered in the Horseshoe Cloister at the bottom of the steps that were also invited into the castle's grounds.

Queen Elizabeth II will be the last member of the royal family to arrive.

Finally, Markle will arrive at the church and also enter via the West Steps.

Eddie Mulholland/AP

12 p.m.

The ceremony begins with a service conducted by David Conner, the Dean of Windsor. Justin Welby, the Archbishop of Canterbury, will officiate as the couple make their vows.

1 p.m.

The newly married couple will process out of the chapel and acknowledge the 200 charity representatives. They will then embark on a carriage procession through Windsor Town, waved off by their close family members from the West Steps. The carriage procession is expected to last just under 25 minutes.

Meanwhile, all members of the congregation will start heading towards the reception at St George's Hall, which is hosted by Her Majesty the Queen.

Around 200 of the guests have also been invited to a more intimate evening reception at Frogmore House, hosted by Prince Charles.

The last glimpse the public will have of Harry and Meghan will be their departure from Windsor Castle to the evening reception.

Photographer Alexi Lubomirski is charged with taking all of the formal photographs of the wedding.

Find out how you can watch the royal wedding wherever in the world you are here.