Brits will get an extra Bank Holiday in May as part of a three-day coronation weekend, Buckingham Palace has announced.
This evening plans were unveiled for the Saturday, Sunday and Monday, which will see Charles officially crowned on May 6.
Thousands are expected to line the streets of London for his big day, while thousands of street parties are expected to be held across the country.
And plans unveiled tonight include a day dedicated to community volunteering on Monday, May 8.
Details released by palace officials say the bank holiday has been set aside for volunteering and is being billed as "the big help out".
Organised by The Together Coalition and a wide range of partners such as The Scouts, the Royal Voluntary Service and faith groups from across the UK, the big help out aims to highlight the positive impact volunteering has on communities.
The palace said in tribute to the King's public service, the big help out "will encourage people to try volunteering for themselves and join the work being undertaken to support their local areas".
The aim of the day is to use volunteering to bring communities together and create a lasting volunteering legacy from the coronation weekend.
With millions of Brits struggling to make ends meet during a cruel cost of living crisis, it expected that the royals will scale back Charles' coronation in comparison to his mother's in 1953, with fewer guests anticipated this time around.
Nevertheless hundreds of dignitaries from around the world are expected to pack into Westminster Abbey, as they did for the Queen's funeral in September, while huge crowds line the streets.
According to the palace it will be "a solemn religious service, as well as an occasion for celebration and pageantry".
It claims that the coronation will "reflect the monarch's role today and look towards the future, while being rooted in longstanding traditions and pageantry".
Culture Secretary Michelle Donelan said the coronation is "a huge milestone in the history of the UK and Commonwealth", adding that the weekend of events will bring people together to celebrate "the mixture of tradition and modernity, culture and community that makes our country great".
the scale of the event could be even larger than the Queen's funeral in September, partly because overseas leaders will have more time to plan their travel.
The funeral saw leaders from most countries receive an invitation.
But representatives from Russia, Belarus, Myanmar, Syria, Venezuela and Afghanistan were not invited, while Iran, North Korea and Nicaragua were invited only at ambassadorial level.
The Government has already launched a consultation on extending pub opening hours throughout the coronation weekend.
That could mean pubs in England and Wales being allowed to stay open until 1am on the Friday, Saturday and Sunday nights.