David Spencer's Education Paragon is a free educational resource portal helping David Spencer's secondary school students, their parents and teaching colleagues with understanding, designing, applying and delivering assessment, curriculum, educational resources, evaluation and literacy skills accurately and effectively. This wiki features educational resources for Indigenous Aboriginal education, field trips for educators, Davids Music Jam, law and justice education, music education and outdoor, environmental and experiential education. Since our web site launch on September 27, 2006, online site statistics and web rankings indicate there are currently 1,878 pages and 14,603,137 page views using 7.85 Gig of bandwidth per month. Pages are written, edited, published and hosted by Brampton, Ontario, Canada based educator David Spencer. On social media, you may find David as @DavidSpencerEdu on Twitter, as DavidSpencerdotca on Linkedin.com and DavidSpencer on Prezi. Please send your accolades, feedback and resource suggestions to David Spencer. Share on social media with the hashtag #EducationParagon. Thank you for visiting.
The following definition was found at the web site listed under 'References' below. Find more definitions in David Spencer's Education Paragon Glossary.
Greenwich Mean Time (GMT) is the time measured on the Earth's zero degree line of longitude, or meridian. This runs from the North Pole to the South Pole, passing through the Old Royal Observatory in the London suburb of Greenwich.
This line has been called the Greenwich Meridian since 1884, and it is from here that all terrestrial longitudes are measured and the world's time zones are calculated.
Generally, if you are in a country east of the Greenwich Meridian, your local time is ahead of GMT (e.g. local time in China is GMT +8 hours).
West of the Greenwich Meridian, local time is behind GMT (e.g. local time in New York is GMT -5 hours in winter and GMT - 4 hours in summer).
BBC World Service and GMT BBC World Service times are normally shown in GMT (although our online schedules also show local times).
International Dateline The dividing line between East (GMT+) and West (GMT-) on the opposite side of the world to the Greenwich Meridian is the International Date Line. This is a modification of the 180° meridian running north to south through the Pacific Ocean.
Seasonal Changes GMT remains constant throughout the year. In the winter months, local time in the UK is the same as GMT, but in March, local time is moved forward one hour to British Summer Time (BST) until the end of October. A number of other countries around the world also use this "daylight savings" measure and change their local times to take advantage of earlier sunrises.
UTC Some broadcasters show times in UTC (Co-ordinated Universal Time). This is essentially the same as GMT, but UTC is measured by an atomic clock and is thus more accurate - by split seconds. It is used primarily for scientific purposes.
- BBC World Service 3 Feb 2009 <http://www.bbc.co.uk/worldservice/help/2007/12/071204_gmt.shtml>