The high profile wedding will be shown on TV networks around the world and in the UK the three main broadcasters - BBC, ITV and Sky - will be covering the day extensively.
The ceremony is set to start at 12pm and TV coverage will begin early in the morning and last well into the afternoon.
Prince Harry and Meghan Markle will then take a royal carriage procession through the streets of Windsor which will be lined by celebrators.
They will then head to St George's Hall at Windsor Castle for the lunchtime reception, however this part of the day will not be televised.
What time is the Royal Wedding on TV?
Dermot O’Leary, Kirsty Young and Huw Edwards will lead the live coverage from Windsor Castle on BBC1 from 9am to 2pm on Saturday, May 19.
The evening before, the same presenters will kick off the weekend with a look-ahead show The Royal Wedding: They’re Getting Married in the Morning.
Tina Daheley, Alex Jones, Ore Oduba and Anita Rani will be situated around Windsor on the big day to capture the excitement and reactions of the day.
On the morning of the wedding, Kirsty and Dermot will be based by the moat outside Windsor Castle, while Huw will be on the roof of the Guard Room within the walls of Windsor Castle.
GettyRoyal wedding 2018 TV coverage: What time will the Royal Wedding be on TV on Saturday?
Huw said: “I’m thrilled to be part of the presenting team for the Royal Wedding celebrations.
“It’s always to great to get out from behind the news desk, and with this live day of coverage we’ll be bringing BBC viewers the latest from Windsor as the excitement builds throughout the day.”
Later in the day, BBC Two will look back on the day with a live programme, The Royal Wedding: Highlights of the Day at 6.30pm and 8pm.
GettyRoyal wedding 2018: Dermot O’Leary, Kirsty Young and Huw Edwards will lead the BBC coverage
Philip Schofield and Julie Etchingham will be presenting the live coverage of the royal wedding on Saturday May 19 in a purpose-built studio in Windsor.
The coverage begins at 9.25am and runs until 3pm and then at 8pm, ITV3 will be showing an hour-long royal wedding highlights show.
Julie and Philip will be joined by a range of guests including those who know Prince Harry and Meghan.
Presenters and correspondents including Mary Nightingale, Nina Hossain, Charlotte Hawkins and royal editor Chris Ship will be providing expert updates throughout the day.
GettyRoyal wedding 2018 TV coverage: Philip Schofield and Julie Etchingham will front the ITV coverage
James Mates will lead live commentary of the service from inside St George’s Chapel.
Rageh Omar will exclusively join Sentebale, the charity co-founded by Prince Harry for celebrations in Lesotho.
Sky will be broadcasting in UHD (Ultra High Definition) in a special programme from 9am to 3pm on Sky News and Sky One on Saturday, May 19.
Presenters Kay Burley and Anna Botting will front the Sky coverage from The Long Walk and Castle grounds.
Prince Harry and Meghan Markle wedding: What we know so farFri, May 4, 2018
Prince Harry and Meghan Markle: Everything we know about the royal wedding so far - including the date, location, dress and more.
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Prince Harry and Meghan Markle wedding: What we know so far
Jayne Secker, Sarah-Jane Mee, Colin Brazier and Jonathan Samuels will join the presenters.
The broadcaster says it’s a world first for any royal event to be broadcast in UHD.