Uploaded January 2018 | Updated September 2026, 6 hours ago
Produced for the Post Office by Robin Crane Films, "The Time Line" relates the story of how the clocks of the world came to be synchronised through the prime meridian at Greenwich in 1884.
In 1984 a set of commemorative stamps were commissioned by the Post Office to celebrate the centenary.
We also hear about John Harrison's endeavours to design an accurate clock to be used aboard ships, which was the key to establishing longitude and latitude.
Julian Pettifer narrates this fascinating film.
Produced for the Post Office by Robin Crane Films, "The Time Line" relates the story of how the clocks of the world came to be synchronised through the prime meridian at Greenwich in 1884.
In 1984 a set of commemorative stamps were commissioned by the Post Office to celebrate the centenary.
We also hear about John Harrison's endeavours to design an accurate clock to be used aboard ships, which was the key to establishing longitude and latitude.
Julian Pettifer narrates this fascinating film.
