* 1900 – The first Zeppelin flight takes place on Lake Constance near Friedrichshafen, Germany.

Due to the heavy, guitar-driven blues rock sound of their first two albums, Led Zeppelin are frequently recognised as the progenitors of heavy metal and hard rock.

The album's track " Jim's Blues ", with Plant on harmonica, was the first studio track to feature all four members of the future Led Zeppelin.

In their first year, Led Zeppelin completed four US and four UK concert tours, and also released their second album, entitled Led Zeppelin II.

In August 1979, after two warm-up shows in Copenhagen, Led Zeppelin headlined two concerts at the Knebworth Music Festival, playing to a crowd of approximately 104, 000 on the first night.

The first significant post-Led Zeppelin project was The Honeydrippers, formed in 1981 by Robert Plant and featuring Jimmy Page on lead guitar, along with studio musicians and friends of Plant and Page, including Jeff Beck, Paul Shaffer, and Nile Rodgers.

The first Led Zeppelin box set, featuring tracks remastered under Page's supervision, was released in 1990 and bolstered the band's reputation, leading to abortive discussions among members about a reunion.

* 1928 – The airship, Graf Zeppelin completes its first trans-Atlantic flight, landing at Lakehurst, New Jersey, United States.

Over the first few albums their style remained essentially hard rock, with heavy influences from The Who and Led Zeppelin but also became increasingly influenced by bands of the British progressive rock movement.

In 1899, Zeppelin started constructing his first airship from his own designs.

Construction of the first Zeppelin began in 1899 in a floating assembly hall on Lake Constance in the Bay of Manzell, Friedrichshafen.

** Led Zeppelin I, Led Zeppelin's first studio recorded album, is released.

* October 15 – Led Zeppelin makes their first live performance, at Surrey University in England

* June 22 – The DELAG Zeppelin dirigible, Deutschland, makes the first commercial passenger flight from Friedrichshafen to Düsseldorf in Germany.

For the first time the world has a front row seat on Led Zeppelin.

The first attempt was the filming ( by Peter Whitehead and Stanley Dorfman ) of Led Zeppelin's Royal Albert Hall performance on 9 January 1970, but the lighting was judged to be mediocre, and the film was shelved ( this footage was later remastered and featured on the 2003 release Led Zeppelin DVD ).

Led Zeppelin were among the first rock bands to be re-issued on CD, but such was the haste to capitalise on the new format that the new CDs were derived not from re-equalised master tapes, but from sound-generation tapes that had been equalised for the original vinyl platters.

* 1900 – Ferdinand von Zeppelin builds the first successful airship

The first project he worked on after his return, the Bristol T. T. A., was designed in response to a War Office requirement for a two-seat fighter intended for home defence against Zeppelin raids.

The first lighter-than-air aircraft of any type to circumnavigate the Earth under its own power was the rigid airship LZ 127 Graf Zeppelin, which did so in 1929.

The festival organiser Michael Eavis, a farmer in a Somerset valley stated that he decided to host the first festival, then called Pilton Festival, after seeing an open air Led Zeppelin concert at the Bath Festival of Blues and Progressive Music 1970.

Afterwards, organiser Michael Eavis stated that he decided to host the first festival, then called Pilton Festival, after seeing an open air Led Zeppelin concert at the Bath Festival of Blues and Progressive Music 1970 at the nearby Bath and West Showground in 1970.

During World War I Great Yarmouth suffered the first aerial bombardment in the UK, by Zeppelin L3 on 19 January 1915.

One must first detect a fleeting mobile or moving target, decide that it is worthy of destruction, select the missile to be fired against the target, compute ballistics for the flight, and prepare the missile for firing.

The photograph, Figure 1 of the completed frieze, shows how, having been separated from his fellows in useless isolation for eighty years, he has now been given a hand, and by juxtaposition ( and the permission of the Committee ), given a new job, to represent the witnesses of the first flight at Kitty Hawk in 1903.

It was probably man's first successful flight in a missile.

Here, in the most eagerly awaited novel of the season ( his first since The Catcher In The Rye, ) he tells of a college girl in flight from the life around her and the tart but sympathetic help she gets from her 25-year-old brother.

Her first actual flight, for she and her kind had made mock flights on dummy panels since she was eight, showed her complete mastery of the techniques of her profession.

* Later in 1919, a British aeroplane piloted by Alcock and Brown made the first non-stop transatlantic flight, from Newfoundland to Ireland.

* In 1927, Charles Lindbergh made the first solo non-stop transatlantic flight in an aircraft ( between New York City and Paris ).

* In 1931, Bert Hinkler made the first solo non-stop transatlantic flight across the South Atlantic in an aircraft.

* In 1932, Amelia Earhart became the first female to make a solo flight across the Atlantic

* 1926 – Varney Airlines makes its first commercial flight ( Varney is the root company of United Airlines ).

* 1961 – The Russian ( Soviet ) cosmonaut Yuri Gagarin becomes the first human to travel into outer space and perform the first manned orbital flight, in Vostok 3KA-2 ( Vostok 1 ).

* 1939 – First flight of the turbojet-powered Heinkel He 178, the world's first jet aircraft.

* 1908 – Wilbur Wright makes his first flight at a racecourse at Le Mans, France.

It is the Wright Brothers ' first public flight.

* 1946 – First flight of the Convair B-36, the world's first mass-produced nuclear weapon delivery vehicle.

* 1901 – The first claimed powered flight, by Gustave Whitehead in his Number 21.

The first manned flight of Apollo was in 1968 and it succeeded in landing the first humans on Earth's Moon in 1969 through 1972.

* 1977 – The first free flight of the Space Shuttle Enterprise.

* 1903 – German engineer Karl Jatho allegedly flies his self-made, motored gliding airplane four months before the first flight of the Wright brothers.

* 1957 – The Soviet Union successfully conducts a long-range test flight of the R-7 Semyorka, the first intercontinental ballistic missile.

* 1991 – The Airbus A340 aircraft makes its first flight.

Lowell Smith and Lt. John P. Richter performed the first mid-air refueling on De Havilland DH-4B, setting an endurance flight record of 37 hours.

* 1965 – The Aero Spacelines Super Guppy aircraft makes its first flight.