1910: The Watford Football Supporters Club is formed following a meeting in the Essex Arms Hotel. Its future membership would largely draw from one of the town's primary industries - printing.
1915: Watford win the Southern League, Division One Championship.
1915: Competitive football suspended owing to World War I. Tragically, former players George Badenoch, James Chalmers and Albert Farrow would not survive the War.
1917: Owing to money worries and dispute with Lady Essex over Cassio Road, the football club suspend operations.
1919: The Magpies lose out on a second Championship on goal average.
1919: The town's Benskins Brewery supports the club to resolve the dispute at Cassio Road and begins negotiations for the freehold of a site at Vicarage Road.
1920: Watford, along with the majority of the Southern League, Division One teams are drafted in to the new Football League, Division Three.
1921: Division Three became Division Three, South and more Northern clubs are welcomed into the Football League.
1922: Watford leaves Cassio Road and moves to a newly-built ground at Vicarage Road, which opened with a League fixture against Millwall on 30 August. Benskins maintained the freehold but funded the club in developing the site as a stadium; with good reason, the club became known as 'the Brewers'.
1926: After 16 years, Harry Kent is replaced as manager by Fred Pagnam.
1927: Watford re-elected to the League after finishing second-bottom.
1939: League football suspended owing to World War II. New chairman, T. Rigby Taylor, resists calls to close down the club over the duration.
1946: League football resumes after the War.
1947: Jack Bray replaces Findlay as manager. Over the next decade, Watford employ six further managers in relatively quick succession, including a second spell for Neil McBain.
1951: Watford re-elected to the League after finishing second-bottom a second time.
1953: Floodlights for the purpose of illuminated football matches installed at Vicarage Road.
1957: Construction of a replacement structure at the Rookery end, initially a cover but eventually an enclosed stand, commenced. It was part funded by the Supporters Club.
1958: The Blues are demoted to a new, national Division 4 after failing to finish in the top half of Division 3 South.
1958: Jim Bonser becomes chairman, replacing T. Rigby Taylor.
1963: Bill McGarry begins a brief stint as manager.
1964: Ken Furphy joins from Workington as player-manager, heralding an era of unprecedented success at Watford.
1965: Chairman Bonser, feeling his authority threatened, expels the Watford Football Supporters Club and creates a new Supporters Club organisation under his direct control.
1969: Watford promoted to Division 2.
1969: Main Stand extension opened.
1970: Watford beat Liverpool at home in the FA Cup quarter-final to set up a first-ever semi-final appearance.
1971: Ken Furphy leaves and is replaced by George Kirby.
1972: Watford relegated to Division 3.
1973: Mike Keen becomes manager.
1975: Watford relegated to Division 4.
1975: Watford briefly prop up the entire Football League early in 1975/76.
1976: Jim Bonser resigns as chairman and is replaced by Elton John.
1977: Graham Taylor joins as manager from Lincoln City.
1978: Watford win the Division 4 championship and are promoted to Division 3.
1979: Watford promoted to Division 2.
1981: The club's actual centenary passes without acknowledgement as its founding year had not yet been correctly identified.
1982: Watford promoted to Division 1 for the first time.
1982: Watford win the FA Youth Cup.
1982: The Hornets briefly top the Football League early in 1982/83.
1983: Watford finish runners-up to Liverpool in their first top-flight season, winning a place in the UEFA Cup.
1983: The Hornets reach Round 3 of the UEFA Cup, knocking out Kaiserslautern and Levski Spartak Sofia before bowing out to Sparta Prague.
1984: Watford reach the FA Cup final for the first time.
1986: Shrodells Stand demolished and replaced with a two-tier reinforced concrete structure named the Sir Stanley Rous stand.
1987: Watford reach the FA Cup semi-final.
1987: Graham Taylor leaves to join Aston Villa as manager and is replaced by Dave Bassett. Taylor went on to manage England between 1990-1994.
1988: Bassett replaced by Steve Harrison after a poor half season.
1988: Watford relegated to Division 2.
1989: Watford win the FA Youth Cup a second time.
1990: Colin Lee begins a brief stint as manager only to be replaced the same year by Steve Perryman.
1991: The club celebrates its 'Official Centenary' after Trefor Jones' research confirmed its founding year as 1881.
1992: Division 1 becomes the Premier League. Second-tier Watford now play in Division 1.
1993: The Vicarage Road end terracing replaced by a single-tier stand.
1993: Glenn Roeder becomes manager.
1995: Replacement Rookery end stand opened.
1996: Graham Taylor returns as General Manager. Kenny Jackett appointed team manager for a short period.
1996: Watford relegated to Division 2.
1997: Graham Taylor begins his second spell as manager.
1998: Watford promoted to Division 1.
1999: Watford win the play-off final at Wembley and are promoted to the Premier League.
2000: Watford relegated back to Division 1 after one season.
2001: Graham Taylor retires as manager and is replaced by Gianluca Vialli.
2002: Vialli leaves with the club in financial crisis owing to the collapse of ITV Digital. Ray Lewington becomes manager.
2003: Watford reach the FA Cup semi-final.
2005: Adrian Boothroyd replaces Lewington as manager.
2006: Watford promoted to the Premier League.
2006: The club marks its 125-year anniversary.
2007: Watford again relegated back to the renamed Championship after one season.
2012: The Pozzo family buys Watford FC. A decade of relatively frequent turnover of head coaches would follow.
2013: Watford reach the play-off final at Wembley thanks to arguably their most famous goal, scored by Troy Deeney in injury time of the semi-final against Leicester immediately following a dramatic penalty save at the other end.
2014: The Rous Stand is renamed the Graham Taylor Stand in honour of the club's most successful manager.
2014: The replacement East Stand is formally opened as the Sir Elton John Stand.
2015: Watford promoted to the Premier League.
2016: Watford reach the FA Cup semi-final.
2019: Watford reach the FA Cup final for the second time.
2020: The Covid-19 pandemic temporarily suspends football. Watford relegated to the Championship after football restarted without supporters in stadiums.
2021: Watford promoted back to the Premier League.
