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UV Index for Today Past UV Index Background Information on UV Radiation & UV Index UV Index - Related Sites Glossary

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Marine Meteorological Services Port Meteorological Services Tidal Information

	General Information
The Hong Kong Observatory Logo Hong Kong Observatory - Activities An Introduction to the Observatory The members of the Weather Family The History of the Observatory Programme Areas Organization Chart Telephone Directory Performance Pledge

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	Aviation Weather
Aviation Weather Services Aviation Weather Observation and Forecast Climatological Information Weather on Wings Meteorological Facilities Virtual tour of Airport Meteorological Office Educational Resources Aviation Related Web Sites

	Environmental Radiation Monitoring Programme
Environmental Radiation Monitoring - Sampling and Measurement Ambient Gamma Radiation Measurement Laboratory Measurement Radiological Survey Summary on Environmental Radiation Monitoring

	Astronomy
Eclipses Mid-Autumn Festival Star Maps Twilight Paths of the Sun throughout the year Times of Meridian Passage of the Planets Times of Rise and Set of the Sun and Planets Time of Rise and Set for Sun and Moon

	Time
Synchronization of Computer Clock Basic Terms International Time Zone Hong Kong Summer Time History of Hong Kong Time Service Milestone of the Hong Kong Observatory Time Service Hong Kong Timing System Time Checking Beginning of 21st Century Gregorian-Lunar Calendar Conversion Table

	Educational Resources
Climatological Information Topic in Meteorology Topic in Seismology Topics in Radiation Topics in Aviation Meteorology Information on Time Service and Astronomy Instrument Friends of the Observatory Hong Kong Observatory Resource Centre Newspapers Articles by Hong Kong Observatory (Chinese only) A Virtual Tour of the Observatory's Exhibition Hall

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2003 \| Important notices	Last revision date: <29 May 2008>