Lyttelton Timeball Station
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The Lyttelton Timeball Station is a heritage-registered time ball station and prominent local landmark in Lyttelton, New Zealand. The original station, built in 1876, was significantly damaged by a se
Lyttelton Timeball Station in November 2009
The rebuilt Lyttelton Timeball Station in 2025
Foundations of the Timeball Station, during archaeological recording following demolition
Longitude
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Longitude is a geographic coordinate that specifies the east-west position of a point on the surface of the Earth, or another celestial body. It is an angular measurement, usually expressed in degrees
The clockwork in John Harrison's H4 marine chronometer on display at the Royal Observatory, Greenwich
Marine sandglass MMM