Sussex Day takes place annually on 16 June, the feast of St Richard of Chichester (1197–1253), the patron saint of Sussex.
Also known as Richard de Wych, the saint was bishop of Chichester.
Suffolk Day takes place annually on 21 June.
Former BBC radio presenter Mark Murphy created the event in 2016.
It has since become a staple in the Suffolk calendar, hosted by towns across the county.
Mercia Day takes place annually on 22 June, the feast of St Alban.
St Alban is the first recorded British Christian martyr, by tradition beheaded in Verulamium (modern St Albans) during the third or fourth centuries.
Black Country Day celebrates the installation of the first practical steam engine by Thomas Newcomen (1712).
Hampshire Day takes place annually on 15 July, the Feast Day of St Swithun.
St Swithun was Bishop of Winchester (852–63) and subsequently patron saint of Winchester Cathedral.
Buckinghamshire Day marks the origin of the Paralympic Games.
On the opening day of the London Olympics (1948), Stoke Mandeville Hospital hosted the first event ever organised for disabled athletes alongside an Olympic Games.
The Stoke Mandeville Games later became the Paralympic Games, which first took place in Rome (1960).
Yorkshire Day began in 1975 as a celebration launched by the Yorkshire Ridings Society – newly formed ‘a protest movement against the local government re-organisation of 1974’ – to promote the county of Yorkshire.
The King’s Own Yorkshire Light Infantry, now part of the The Rifles, already celebrated this date as Minden Day, marking their part in the battle of Minden (1759).
The six infantry regiments involved in that battle wear a rose in their headdress.
In the case of The Rifles, the rose is white.
North Riding Day takes place annually on 22 August.
It marks the date of the battle of the Standard (1138), when English forces defeated the Scots near Northallerton.
The name of the battle derives from the consecrated banners of the minsters of Durham, York, Beverley and Ripon.
These flew from a mast mounted on a cart that marked the centre of the English position.
East Riding Day takes place annually on 24 August.
It marks the birthday of Hull-born MP William Wilberforce (1759–1833), leader of the movement to abolish the slave trade.
Northumbria Day takes place annually on 31 August, the feast of St Aidan.
Aidan of Lindisfarne (d. 651) was a monk and missionary.
He founded Lindisfarne Priory and by tradition converted the Northumbrians to Christianity.