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The Chinese Agricultural Calendar
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2025 Almanac
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Daya Bay Contingency Plan
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Security Bureau - Daya Bay Contingency of The Hong Kong Special Administrative Region
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Environment and Ecology Bureau - Import Control on Japanese Food
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The Center for Food Safety - Situation Update of Radiation Tests on Food Imported from Japan
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My Little Observatory
Interactive Map of Storm Damage by Mangkhut
Learning
Educational Resources
360 Tour of HKO
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My Little Observatory
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Decoding Radiation
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A Tour of Tropical Cyclones
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Cloud Appreciation by Dr Tin
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International Cloud Atlas
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Courses and Activities for the Public
Subscription of e-Bulletins
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World Meteorological Organization
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World Weather Information Service
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International Cloud Atlas
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Global Multi-hazard Alert System – Asia
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Commission for Observation, Infrastructure and Information System
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Commission for Weather, Climate, Hydrological, Marine and Related Environmental Services and Applications
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World Meteorological Day
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Asia/Pacific Air Navigation Planning and Implementation Regional Work Group
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Quick Earthquake Messages (M6.0+ and Felt) - X Channel
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Press Releases
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Cool Met Stuff
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MyObservatory
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About Us
About Hong Kong Observatory
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HKO Corporate Video
Vision and Mission
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Organizational Structure
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Hong Kong Observatory – The Facts
Hong Kong Observatory 2024
Our Services
Programme Areas of the Observatory
History of the Hong Kong Observatory
Career@HKO
Visitors Figures
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Hong Kong Observatory Open Day 2025
Local Weather
Regional Weather
Weather Photo
Rainfall Distribution Map
Ultraviolet (UV) radiation information
Visibility Readings in Hong Kong Waters
Weather Report
Yesterday's Weather and Radiation Level
Past Weather
Upper-air Observations in Hong Kong
King's Park Meteorological Station
Weather Forecast
Local Weather Forecast
9-Day Weather Forecast
Special Weather Tips
Extended Outlook
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Automatic Regional Weather Forecast
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Two-hour Rainfall Nowcast
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One-hour Lightning Nowcast
UV Index Forecast
South China Coastal Waters
Marine Forecast
Computer Forecast Weather Map
Weather Warnings
Today's Weather Warnings
Warning Information
Regional Info on Heavy Rain & Thunderstorms
Tropical Cyclone Warning (Local)
Details of Warnings
Weather for Marine
Weather Information for the Marine Community
Port Meteorological Services
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MyOceanWeather Gallery
Weather Monitoring Imagery
Radar Imagery
Lightning Location Information Services
Satellite Imagery
Weather Charts
Sand and Dust Weather Information
Backward Trajectory Map
GIS Weather Service
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Earth Weather
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Met on Map
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Regional Weather on GIS
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Location-specific Lightning Alert
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Automatic Regional Weather Forecast
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Two-hour Rainfall Nowcast
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One-hour Lightning Nowcast
China Weather
China Cities Weather
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Weather Website for Greater Bay Area
Guangdong Major Cities
Rainfall in Guangdong & Adjacent Areas
World Weather
World Weather Information
Weather at Airports
Climatological Mean Surface Temperatures over the Asian Region
Climatological Mean Surface Winds over the Asian Region
Weather
Local Weather
Weather Forecast
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Weather for Fishermen
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Earthquakes
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Quick Earthquake Messages (M6.0+ and Felt) - Twitter Channel
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Quick Earthquake Messages (M5.0+) - Twitter Channel
Global Earthquake Information Webpage
Earthquake Reports
Report felt tremor in Hong Kong
Earthquake Monitoring
Understanding Earthquake
Tsunamis
Tsunami Information and Warning
Understanding Tsunamis
Tsunami Monitoring and Warning in Hong Kong
Tide
Tidal Information
Predicted Tide
Photos of Tide Stations
Tide Tables for Hong Kong 2025
Tide Tables for Hong Kong 2024
Data for Individual Tide Gauge Station
Storm Surge Records
Geophysics
Earthquakes
Tsunamis
Tide
Geomagnetism
Space Weather
Astronomical Data
Date and Time of the 24 Solar Terms
Time, Direction and Elevation of Sun Transit
The Apparent Right Ascension and Apparent Declination of the Sun
Date and Time of the Moon Phases
Interesting Astronomical Phenomena
Astronomical Photo Album on the Web
Solar Eclipse
Lunar eclipses
Comet
Meteor and Meteor Shower
Opposition of Jupiter
Opposition of Saturn
Parade of the five planets
Transit of Venus
Apparentmotion of planets
Time Services
Web Clock
Network Time Service
International Time Zone
Hong Kong Standard Time
Hong Kong Summer Time
History of Hong Kong Time Service
Hong Kong Timing System
Time Checking
Basic Terms of Time Services
Milestones of the Hong Kong Observatory Time Service
Hong Kong Meridian
Calendar
The Chinese Agricultural Calendar
The 24 Solar Terms
Heavenly Stems and Earthly Branches
The 12-Year Animal Cycle
Gregorian-Lunar Calendar Conversion Table
Beginning of 21st Century
Almanac
2025 Almanac
2026 Almanac
2027 Almanac
Astronomy & Time
Weather Information for Astronomical Observation
Interactive Sun Path Diagram
Astronomical Data
Interesting Astronomical Phenomena
Time Services
Calendar
Almanac
Related Sites
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Security Bureau - Daya Bay Contingency of The Hong Kong Special Administrative Region
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Environment and Ecology Bureau - Import Control on Japanese Food
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The Center for Food Safety - Situation Update of Radiation Tests on Food Imported from Japan
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Department of Health - Radiation Health FAQs and Glossary
This link will open in a new window
Agriculture, Fisheries and Conservation Department - Radiological Testing of Fishery Products
Radiation Monitoring
Real time Radiation level in Hong Kong
Understanding Radiation
Radiation Monitoring, Assessment and Protection
Environmental Radiation Monitoring Programme
Daya Bay Contingency Plan
Related Sites
Travel
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Hong Kong Weather Information for Tourists
World Weather Information
Sports
Weather Information for Aviation Sports
Weather Information for Water Sports
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Hong Kong Hiking Trail Weather Service
CWOS
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CWOS Facebook Group
CWOS Photo Gallery
Community
Schools
Travel
Sports
Outdoor Photography
CWOS
Senior Citizens
Stargazers
FoOb
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Co-Win
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My Little Observatory
Interactive Map of Storm Damage by Mangkhut
Learning
Educational Resources
360 Tour of HKO
This link will open in a new window
My Little Observatory
This link will open in a new window
Decoding Radiation
This link will open in a new window
A Tour of Tropical Cyclones
This link will open in a new window
Cloud Appreciation by Dr Tin
This link will open in a new window
International Cloud Atlas
Guided Tour
Courses and Activities for the Public
Subscription of e-Bulletins
Research Forum
Publications
World Meteorological Organization
This link will open in a new window
World Weather Information Service
This link will open in a new window
Severe Weather Information Centre
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International Cloud Atlas
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Global Multi-hazard Alert System – Asia
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Commission for Observation, Infrastructure and Information System
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Commission for Weather, Climate, Hydrological, Marine and Related Environmental Services and Applications
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World Meteorological Day
International Civil Aviation Organization
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Meteorology Panel
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Asia/Pacific Air Navigation Planning and Implementation Regional Work Group
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Asia and Pacific (APAC) Office
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APAC Regional Sub-Office
International & Regional Cooperation
World Meteorological Organization
International Civil Aviation Organization
International Atomic Energy Agency
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Regional Specialized Meteorological Centre for nowcasting
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South China Sea Tsunami Advisory Center
Asian Aviation Meteorological Center
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X
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SINA Weibo
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Tudou
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Quick Earthquake Messages (M6.0+ and Felt) - X Channel
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Quick Earthquake Messages (M5.0+) - X Channel
Media & News
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Press Releases
What's New
HKO Updates
LegCo Questions and Answers
Weather Chit Chat
Observatory's Blog
Weather On-Air
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Cool Met Stuff
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Central Briefing
Tropical Cyclone Report Broadcast
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Observatory's News
Vacancies
Tender Notices
Apps
MyObservatory
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MyWorldWeather
e-Services
Apps
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Personalized Website
Weather Wizard
Weather Information in Text
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Weather Information in RSS
Audio Web Page
Forms
Open Data
About Us
About Hong Kong Observatory
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HKO Corporate Video
Vision and Mission
Performance Pledges
Organizational Structure
Quality Management
Hong Kong Observatory – The Facts
Hong Kong Observatory 2024
Our Services
Programme Areas of the Observatory
History of the Hong Kong Observatory
Career@HKO
Visitors Figures
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Hong Kong Observatory Open Day 2025
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Index
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Climate
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Climate Change
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Observatory's Blog (Climate related topics)
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Observatory's Blog (Climate related topics)
Educational Resources
Observatory's Blog (Climate related topics)
"Polar Vortex" in a Warming World (27 February 2019)
"Last Ice Area" Breaks Up for First Time on Record (14 December 2018)
Why 60,000 Indian Farmers Committed Suicide: Climate Change the Culprit (2 November 2017)
Behind the Global Glacial Meltdown (15 August 2016)
Can A Quiet Sun Halt Warming on Earth? (19 August 2015)
Where is the "Hiatus" in Global Warming? (26 June 2015)
The Tolling of Climate Alarm Bells (17 December 2014)
Record High Carbon Dioxide Concentration (23 October 2014)
Point of No Return (9 June 2014)
Warm Arctic, Cold Continents (29 January 2014)
Are you aware of the scientific consensus on global warming? (31 December 2013)
Cherry-picking - a basic trick to distort the truth (28 October 2013)
An ever-extending hockey stick (6 September 2013)
Who's in charge of global warming? (25 July 2013)
Has global warming stopped? (21 December 2012)
Are polar bears the only victim of the melting Arctic? (15 October 2012)
New Record Low for Arctic Sea Ice (6 September 2012)
Hong Kong's Future Temperature (14 August 2012)
The reality of the inconvenient truth (9 February 2012)
Warm winter ? Cold winter ?(18 January 2012)
Weather extremes becoming normal? (28 December 2011)
Observatory's new initiatives help reduce impact of aviation on the climate (9 September 2011)
Volcanoes, weather and climate (29 August 2011)
How cold was the past winter? (7 June 2011)
What is a normal year? (21 January 2011)
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Warm nights (26 November 2010)
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The monsoons and climate change (22 October 2010)
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China's population and climate change (25 June 2010)
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How hot would it get ? (14 May 2010)
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Climate change - Now the sea has also warmed up (30 April 2010)
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Climate change queries (2) - arctic sea ice and Himalayan glaciers (24 February 2010)
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Climate change queries (1) - mini ice age ? (12 February 2010)
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The potential of renewables (9 November 2009)
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Future sea level in Hong Kong (2 November 2009)
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Hong Kong's future rainfall (14 October 2009)
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Dragon Boat Festival climate (12 August 2009)
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Climate change - the latest warning (16 June 2009)
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Dragon boats in May, stow the blanket away ? (25 May 2009)
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Thinking about sunset (8 January 2009)
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2008 - climate change (30 December 2008)
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Spring in autumn (2) (26 November 2008)
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Spring in autumn (6 November 2008)
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Minor Planet 64288 (16 July 2008)
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Articles written by Mr. C. Y. Lam, former Director of the Hong Kong Observatory
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Articles written by Dr. B. Y. Lee, former Director of the Hong Kong Observatory
Note : the Director's Blog was renamed as Observatory's Blog in April 2011.
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