File:Timeballs on Blackhead Point.jpg
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DescriptionTimeballs on Blackhead Point.jpg |
English: Time Balls on Blackhead Point, Hong Kong, taken at least before 1933 中文:香港訊號山(於1933年前拍攝) |
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Date | at least before 1933 (uploaded on 28/03/2007) | |||||||
Source | From Timeball to Atomic Clock - A History of the Royal Obsevatory | |||||||
Author | Unknown authorUnknown author | |||||||
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current | 18:33, 27 March 2007 | 1,015 × 550 (477 KB) | Father vice (talk | contribs) | {{Information |Description= '''en:'''Time Balls on Blackhead Point, Hong Kong, taken at least before 1933<br>'''zh:'''香港訊號山(於1933年前拍攝) |Source= From Timeball to Atomic Clock - A History of the Royal Obsevatory |Date=at least before |
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