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Description
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）
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
Permission
(Reusing this file)
Public domain
This work is in the public domain in Hong Kong because, according to Section 17 in Chapter 528 (Copyright Ordinance) of the Law of Hong Kong, the copyright of this work had expired in Hong Kong. This is either because the period of 50 years from the end of the calendar year in which the author died had already ended, or the work is of unknown authorship and the period of 50 years from the end of the calendar year in which the work was first made has ended. Please also see Wikipedia:Copyrights.
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Public domain

This work is in the public domain in the United States because it meets three requirements:

  1. it was first published outside the United States (and not published in the U.S. within 30 days),
  2. it was first published before 1 March 1989 without copyright notice or before 1964 without copyright renewal or before the source country established copyright relations with the United States,
  3. it was in the public domain in its home country (Hong Kong) on the URAA date (1 January 1996).
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Note: This tag should not be used for sound recordings.

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Date/TimeThumbnailDimensionsUserComment
current18:33, 27 March 2007Thumbnail for version as of 18:33, 27 March 20071,015 × 550 (477 KB)Father vice{{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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