41. Geography Site Links: Time And Time Zones Quite comprehensive details of the different time zones across North If you are interestedin time, or using equipment be found at http//www.geographysite.co http://www.geography-site.co.uk/pages/links/time.html

World Time And Timezones 10,000 Year Calendar Any date for 10,000 years can be viewed on a calendar. In fact, you can select a time anywhere between 1AD and 10,000AD. All leap years and calendar changes are accounted for and you can produce a finished month or year calendar buy just entering the date in a box on screen. You can also download a version of the software to use on your own computer - assuming you are one of the masses using an IMB PC clone of course. Daylight Saving Time The U.S naval Observatory provides this page which explains when daylight saving time begins and ends. it also provides a history of daylight saving time. Earth View A real time view of the Earth showing areas of day and night around the planet. You can specify a centre point for the image by entering latitude and longitude co-ordinates, and even chose the point from which you view the planet. You might decide to see the view as if you were on the Sun or Moon looking at earth, stick with a normal map, or pop around to the dark side of the planet to see what that looks like. In fact, you can even decide on what you see; topography,clouds, infra red or false colour weather images! How long are days and nights ?

42. Time Zones Maps By Hammond Welcome to the best time zone map on the internet! It s so good it s 360k! HOWIT WORKS In this frame, the time zone map will be displayed. http://www.hammondmap.com/sites/hammond/geography/timezone/introtz.html

W e l c o m e t o t h e b e s t t i m e z o n e m a p o n t h e i n t e r n e t It's so good it's 360k! This means it might take a minute or so to load. HOW IT WORKS: In this frame , the time zone map will be displayed. In the upper right , your local time is displayed. In the lower right , the time zone selected by you will be displayed. The default is Greenwich, England. The clock displays the actual time with hours + or - from Greenwich under it. Click anywhere on the map and a time should be displayed with in 3-5 seconds. Know of a country other than the United States that uses Daylight Savings Time? Submit it to webmaster@hammondmap.com You might win a Free Hammond Wallmap. Click here to load the map , or wait a few seconds and you should be taken there automatically. Enjoy! Hammond World Atlas Corporation, 95 Progress Street, Union N.J. 07083

43. Lesson 2 // Overview Of Geography geography Further Reference Microsoft Encarta 99 – Find Lines of Latitude and hemispheres,continents, parallels of latitude, and longitude, and time zones. http://www.2001everest.com/ev/lesson_plans/lesson_2.htm

Geographic grids are intersecting lines drawn on maps and globes. They are used to help locate and describe specific areas. Two sets of lines encircle the globe: lines of latitude and lines of longitude. The parallel lines of latitude are horizontal, running from east to west. The equator is the imaginary line from which latitude is measured; it is equidistant from the poles, dividing the globe into the northern and southern hemispheres. Unlike lines of latitude, which become progressively shorter as they near the poles, all of the lines of longitude are the same length. Longitudinal lines run from north to south, each individual vertical line intersecting both poles. The prime meridian is an arbitrarily selected line from which all of the others are measured. Any location on the globe can be described in terms its angular distance from the reference points of the equator (0° latitude) and the prime meridian (0° longitude). Lesson 2 // Overview of Geography Geography Further Reference Microsoft Encarta 99 – Find: Lines of Latitude and Longitude Objective: The student will explore hemispheres, continents, parallels of latitude, and longitude, and time zones. The students will discuss and compare the time zones of the world.

44. Study In Australia - Landscape geography and climate. Winter. June – August. Spring. September – November.time zones. Because of its large size, there are three time zones in Australia. http://studyinaustralia.gov.au/Sia/en/LivingInAustralia/Landscape.htm

var strLanguage ='en'; var blnAuthoringMode=false; Study in Australia TM study wizard Faq Interactive map Need help? ... Help in your country Geography and climate Australia is a land of contrasts: sweeping golden beaches, coral reefs rich with marine life, tropical rainforests, mountain ranges, vast grazing lands and sparse deserts. Vast tracts of Australia are registered national parks and protected under government legislation. The Great Barrier Reef, Kakadu, Uluru, the Blue Mountains and the Tasmanian Wilderness are among Australia's 14 World Heritage Areas listed by the United Nations. Also in Australian territorial waters and under Australian control are several islands off the Australian coastline and a substantial area of the Antarctic mainland. Surrounded by the Indian and Pacific Oceans, Australia has many animals and plants which are unique on the planet. This is why Australia has strict quarantine regulations to keep out exotic pests and diseases that could affect native plants and animals, human health, agricultural industries and our environment. Australia is the only country to occupy an entire continent. Australia is as wide as the distance from Kuala Lumpur to Taipei and as long as the distance from Singapore to Manila. The area of Australia is almost as great as that of the United States of America (excluding Alaska), about 50 per cent greater than Europe (excluding the former USSR) and 32 times greater than the United Kingdom.

45. Ready Reference: Miscellaneous Resources KEYWORDS geography, map, games, trivia. TITLE Planetary Nomenclature. time zonereference cards and Look up time zones by countries are also available. http://www.itcompany.com/inforetriever/misc_oth.htm

INTERNET LIBRARY FOR LIBRARIANS A Portal Designed for Librarians to Locate Internet Resources Related to Their Profession. A Popular Information Resource Site for Librarians Since 1994. Home About Add or recommend a site Report broken link ... Advertising INSTRUCTIONS: and catalog and internet (both terms); catalog or internet (either term); "catalog internet" (exact phrase) Ready Reference: Miscellaneous Resources TITLE: 50 States and Capitals DESCRIPTION: "Lists the fifty states and information on their locations (latitude and longitude), birds, colleges and universities, constitutions, flowers, genealogical resources, geological formations, geographical features, mottos, national forests and parks, newspapers, nicknames, non profit organizations, populations, state and federal representatives, songs, and the dates of entry into the union."Supplied by publisher. KEYWORDS: states, capitals, symbols, flags, songs

46. ClayGate 526-529 : Mathematical Geography ; Chronology calendar Ephemerides Geodesy Geodetic astronomy Geographic calendars geography AustraliaSurveying education time time systems time zones Standardization http://library.bendigo.latrobe.edu.au/irs/webcat/526.htm

Mathematical geography ; Celestial navigation ; Ephemerides ; Chronology DDC Ancient time Calendar measurement Calendar reform Calendars ... 500s Index : Science The Dewey Decimal Classification is © 1996-2000 OCLC Online Computer Library Center, Incorporated . Used with Permission. Cartography ASCE Related Sites : Geomatics BUBL Link : 526 - Cartography BUBL Link : Cartography Geomatics.net ... ETH Zurich. Institute of Geodesy and Photogrammetry Celestial navigation Geomatics Information Center : Astronomy U.S. Naval Observatory : Celestial Navigation Resources Yahoo! : Celestial Navigation U.S. Naval Observatory : Celestial Navigation Data for Assumed Position and Time Ephemerides Cadastral : 2000 Sun and Polaris Ephemeris Cadastral : 2001 Sun and Polaris Ephemeris Ephemerides server of the Bureau des longitudes Links ... U.S. Naval Observatory : Data Services Chronology Awesome Library : Time Beyond the Black Stump : Time BUBL Link : Chronology Date and Time Gateway ... Sunrise/Sunset (Israel Travel Discounters) U.S. Naval Observatory : Lengths of Longest Shortest Days U.S. Naval Observatory : Length of Day and Night at the Equinoxes U.S. Naval Observatory : Leap Years Beyond the Black Stump : Calendars ... World Times and Dialling Codes (Telstra) WWW Virtual Library : Horology Feedback Form: Please fill out the form below to assist in the maintenance and accuracy of the links on this web page. Your feedback is always appreciated...

47. Time sundial Systems of time explains different types of time used around the worldtime and date.com - a guide to time zones, calendars, and more time Zone http://members.aol.com/bowermanb/time.html

Time About Daylight Saving Time - History, rationale, laws and dates Ancient Time - Time Throughout History And Cultures Atomic Clocks - The Most Accurate Clocks in the World The Aztec Calendar - explanation of the Aztec calendar and how it is used to tell time Calendar - put in any year and see the calendar The Calendar Zone - tons of information about calendars and time Calendars - from Eric Weisstein's World of Astronomy Clockworks: From Sundials to the Atomic Second Comparative Lengths of Days and Nights - from U.S. Naval Observatory Connected Calendar - monthly with holidays and trivia - Classroom Connect Daylight Savings Time - history of DST and dates of when it begins and ends by year Earth Calendar - see holidays from around the world EDUNet's Timemachine - travel to past, select region to see what was happening Equinoxes - explanation from U.S. Naval Observatory Free Printable Calendar Templates - Create calendars formatted for Microsoft Word ® Geologic Time - from Enchanted Learning Software Greenwich 2000 Home Page - information on time and the Prime Meridian Internet Atlas and Timezone Server - get time zone information and lots more Leap Seconds - explained by U.S. Naval Observatory

48. Earth's Motions And Earth-Sun Relationships Study Guide, Physical Geography, Col earth s surface are located using a network of lines called a geographic grid Forconvenience, we use standard time which divides the world into 24 time zones. http://members.aol.com/pakulda/emstyg2.htm

Physical Geography College of Alameda EARTH'S MOTIONS AND EARTH-SUN RELATIONSHIPS STUDY GUIDE Assigned reading: Tarbuck Ch.15 pgs 411-416, Ch. 20 pgs 564-566, and Appendix B, Earth's Grid System pgs 649-650 Web Learning Module: The Atmosphere and Earth's Motions http://members.aol.com/pakulda/emmod.htm CHIEF IDEAS: The study of the earth’s motions is a starting point for understanding the workings of the global ecosystem . The earth's two main motions are rotation and revolution . Rotation is the earth turning on its imaginary axis like a top. Revolution is the earth’s orbit around the sun. The earth rotates west to east on its axis once a solar day. Rotation produces a set of physical consequences such as the daily rhythm of light and heat , the coriolis effect tides , and the oblate ellipsoidal shape of the earth. Rotation is a device for establishing reference points and lines on the globe such as the poles equator parallels of latitude and meridians of longitude. Places on the earth's surface are located using a network of lines called a geographic grid Latitude Longitude prime meridian , an imaginary line from pole to pole passing through Greenwich, England.

49. World Time Zones Find the current time anywhere in the world with adjustments for daylight saving. time Around the World. What's the time in Noosa, London, New York or Tokyo? time Zone Abbreviations. What do http://www.koalanet.com/world-time-zones.html

Time Around the World What's the time in Noosa, London, New York or Tokyo? Noosa's real estate Holiday accommodation Noosa's restaurants About Noosa ... Privacy Time Zone Abbreviations What do EST, PST and so on mean? Military time zone codes Time zone maps Africa, Asia, Australasia, Europe, North America, South America Pick a country Afghanistan Albania Algeria Andorra Angola Argentina Australia - ACT, NSW, Vic Australia - NT Australia - Qld Australia - SA Australia - Tas Australia - WA Austria Bahamas Bahrain Bangladesh Barbados Belarus Belgium Belize Benin Bermuda Bolivia Bosnia Botswana Brazil Britain Brunei Bulgaria Burkina Faso Burma Burundi Cameroon Canada - Atlantic Canada - Central Canada - Eastern Canada - Mountain Canada - Newfoundland Canada - Pacific Canada - Saskatchewan Canada - Yukon Canary Islands Cape Verde Central African Republic Chad Chile China Colombia Congo Costa Rica Cote d'Ivoire Croatia Cuba Cyprus Czech Republic Dem. Rep. Congo (East) Dem. Rep. Congo (West) Denmark Djibouti Dominican Republic Ecuador Egypt England Estonia Ethiopia Fiji Islands Finland France French Polynesia Gabon Gambia Georgia Germany Gibraltar Great Britain Greece Greenland Guam, Mariana Is.

50. SpatialNews, The Leading GIS, LBS, And Geospatial Technology News Resource Spatial News is your daily provider of GIS, CAD, and mappingrelated news. the present system of time zones and is now also Stopwatchmaps.com - US time zones. Stopwatchmaps has developed a the following description. time zones, and their boundary lines http://spatialnews.geocomm.com/features/timezones

Sponsored by: TOPICS Today's News Submit News Feature Articles Product Reviews ... Editor's Corner SpatialNews Daily Newswire! Subscribe now! Latest Industry Headlines Batty, Tucker to Address Web Services During GITA Webcast Weiler Mapping Promotes Mat Andrews to GIS Project Manager Matrox advanced multi-display graphics cards to be showcased at AAAE technology exhibition CSI Wireless' Asset-Link(TM) Helping Texas Police Break Truck Theft Ring ... Education Revenues Up 4 Percent Latest GeoBids-RFPs Exploitation of Geospatial Products Mapping Services-*Written in French TECHNOLOGY EQUIPMENT-VA Surveying Services-TX ... Digital elevation data-VA Recent Job Opportunities GIS Developer GIS Production Technician Photogrammetric Technician GIS PROGRAMMER/ANALYST ... Senior GIS Specialist Recent Discussions Web-Enabled AVL Solution installation of ArcGIS 9 Hi All !!! Postal Code Database ... Help w/ Geo-Rectifying GPS Lat-Long to DEM International Time Zones and Time Zone Data GIS and Time have more in common than you might think. Did you know that a Canadian Land surveyor, Sir Sanford Flemming, contributed to the early adoption of the present system of time zones and is now also know as “Father of Standard Time”. Flemming lived in Halifax (my birthplace!) in the 1880’s and was engineer-in-chief for construction of the intercolonial railway between the Maritimes and Quebec. Flemming is also honored with an educational institution named for him, Sir Sanford Flemming College , which boasts one of the finest GIS programs in Canada. For more details on Sir Sanford Flemming consult this Paper -

51. Time Zones - Foreign Trade Online time zone converter, world date and time gateway and anything you want to know about Greenwich Mean time (GMT) and geographic location (Longtitude/Latitude) of any location in the world. time zones. Local times Around the World. World Date time Gateway. If you are having problem with any of the links or if http://www.foreign-trade.com/timezones.htm

52. Inventions: Time Zones - EnchantedLearning.com time zones Their Invention and Implementation. The Earth is divided into 24 timezones so that everyone in the world can be on roughly similar schedules (like http://www.enchantedlearning.com/inventors/page/t/timezones.shtml

Join Enchanted Learning Click here for more information on site membership. $20.00/year or other amount (directly by Credit Card $20.00/year (transaction via PayPal Other Amount (transaction via PayPal As a thank-you bonus, site members have access to a banner-ad-free version of the site, with print-friendly pages. (Already a member? Click here. EnchantedLearning.com Zoom Inventors and Inventions A B C D ... USA/Canada Time Zones: Their Invention and Implementation The Earth is divided into 24 time zones so that everyone in the world can be on roughly similar schedules (like noon being roughly when the sun is highest in the sky). The idea to divide the Earth into time zones was proposed by the Canadian railway planner and engineer Sir Sandford Fleming (1827 - 1915) in the late 1870s. Time zones were first used in 1883 by railroads in order to standardize their schedules. World time zones were determined in 1884, at an international conference in Washington, D.C. Each of the 24 world time zones are about 15 degrees wide and differ by one hour. Early Time Keeping Until about 100 years ago, each city set its clocks to

53. Time Palette - World Time And Mapping Tools world with correct sun and moon shading, and calculates a wealth of global time,geographic, astronomical and Scheduler supports six independent time zones. http://www.timepalette.com/timepalette.html

Time Palette displays the current local time for any city, renders real-time, photorealistic maps of the world with correct sun and moon shading, and calculates a wealth of global time, geographic, astronomical and weather data. Since its debut more than a decade ago, Time Palette has become the leading global time tool on the Macintosh platform and has been honored by ZDNet with an Editor's Pick Award. New features in Time Palette version 5: Full native support for Mac OS X and 9.1+. Favorites feature for frequently used cities. Stunning maps with moonlight and city lights. Supports all Daylight Saving Time systems. Twilight graphs depict daily solar conditions. Includes 12 alarms and displays local time. Scheduler supports six independent time zones. Shows Sidereal Time for astronomy applications. Distance panel allows for multiple segment trips. Real-time weather conditions via Internet. Time Palette's extensive mapping features support 11 unique map projections with both satellite and political maps. Time Palette includes an Atlas with detailed geographical and time zone information for over 10,000 cities throughout the world.

54. World Time Zones World time zones. Maps showing the geographical boundaries between time zones. Noosaholiday home, Noosa s real estate Holiday accommodation Noosa s restaurants. http://www.koalanet.com.au/wtz-map.html

World time zones Maps showing the geographical boundaries between time zones Noosa's real estate Holiday accommodation Noosa's restaurants About Noosa ... Privacy These maps show the standard variation from GMT/UTC. Daylight saving, where applicable, is not shown or allowed for. 28 Kbs Africa - 44 Kbs Asia (without Russia) - 47 Kbs 73 Kbs South America - 30 Kbs Europe (without Russia) - 59 Kbs Koala Net Western Web Directories Technical comments

55. World Time Zones World time zones. time zone abbreviations. Here is an explanation of the time zoneabbreviations used internationally and locally Military time zone codes. http://www.koalanet.com.au/wtzabb.html

World time zones Time zone abbreviations Noosa's real estate Holiday accommodation Noosa's restaurants About Noosa ... Privacy Here is an explanation of the time zone abbreviations used internationally and locally: GMT - Greenwich Mean Time UTC - Universal Time Coordinated (the same as GMT) US and Canada see map (73Kbs) AST Atlantic Standard Time (GMT -4 hours) ADT Atlantic Daylight Saving Time (GMT -3 hours) EST Eastern Standard Time (GMT -5 hours) EDT Eastern Daylight Saving Time (GMT -4 hours) CST Central Standard Time (GMT -6 hours) CDT Central Daylight Saving Time (GMT -5 hours) MST Mountain Standard Time (GMT -7 hours) MDT Mountain Daylight Saving Time (GMT -6 hours) PST Pacific Standard Time (GMT -8 hours) PDT Pacific Daylight Saving Time (GMT -7 hours) AKST Alaska Standard Time (GMT -9 hours) AKDT Alaska Daylight Saving Time (GMT -8 hours) HST Hawaiian Standard Time (GMT -10 hours) (Hawaii doesn't adjust for Daylight Saving) Europe see map (59Kbs) BST British Summer Time (GMT +1 hour) IST Irish Summer Time (GMT +1 hour) CET Central Europe Time (GMT +1 hour) CEST Central Europe Summer Time (GMT +2 hours) EET Eastern Europe Time (GMT +2 hours) EEST Eastern Europe Summer Time (GMT +3 hours) Australia see map (28Kbs) AEST Australian Eastern Standard Time (GMT +10 hours) Other maps Military time zone codes.

56. Time Measurement, Time Zones, And The International Date Line (The Geographical Journal). The Internet and international marketing. KeynoteMeasures 42 Web Sites in Major time zones. Search HighBeam Research for http://www.infoplease.com/cgi-bin/id/A0002063.html

HOTWORDS CITE PRINT EMAIL in All Infoplease Almanacs Biographies Dictionary Encyclopedia Home Almanacs Atlas Encyclopedia ... Father's Day Infoplease Tools Periodic Table Conversion Tool Perpetual Calendar Year by Year ... Site Map Career Center Job Search Post Your Resume Continuing Ed. more . . . Also from Infoplease Search Infoplease Info search tips Search Biographies Bio search tips Society and Culture Calendars Time Measurement, Time Zones, and the International Date Line The two natural cycles on which time measurements are based are the year and the day. The year is defined as the time required for Earth to complete one revolution around the Sun, while the day is the time required for Earth to complete one turn upon its axis. Earth needs 365 days plus about six hours to go around the Sun once, so a year does not consist of a round number of days; the fractional day has to be taken care of by an extra day every fourth year. But because Earth, while turning upon its axis, also moves around the Sun, there are two kinds of days. A day may be defined as the interval between the highest point of the Sun in the sky on two successive days. This, averaged out over the year, produces the customary 24-hour day. But one might also define a day as the time interval between the moments when a certain point in the sky, say a conveniently located star, is directly overhead. This is called: Sidereal time.

57. Time Zones would be less confusion and better communication between people and countries thetime zones boundaries are based on geographical and political conditions. http://www.hawaii.edu/hga/Lessons/timezones.html

HGA Lesson Collection Time Zones August 1999 Cynthia W. Nagamine Grade: 3 Purpose: Are there differences in the time of day depending on where you are? Could it be 12 o'clock midnight in one country or state and 12 o'clock at noon in another area of the world at the same time? How do we figure out what time it is in all of these different countries? Why do we have these different time zones? Why is this important for me know? Our 3rd grade curriculum focuses on the study of some of the cultures present here in Hawaii and on the countries that these cultures originated from. (The countries that we focus on are the Philippines, Japan, China, Portugal, and Africa.) Students are encouraged to observe and value the similarities and differences between various cultures and countries. To enrich this curriculum, students will study time zones and the effects that the differences in time have on the Earth and it's countries. Geographic Themes: Location, Place, Region Geographic Standards: Standard 1: How to use maps and other geographic representations, tools, and technologies to acquire, process, and report information from a spatial

58. Tasmania FAQ: Tasmanian Geography Tasmanian geography. Which time zone is Tasmania in? Tasmania is on AustralianEastern time (AET), the same time zone as the rest of eastern Australia. http://tourtasmania.com/tasfaq/geography/timezone.html

Text version Feedback Tasmanian Geography Which time zone is Tasmania in? Tasmania is on Australian Eastern Time (AET), the same time zone as the rest of eastern Australia. That makes Tasmania ten hours ahead of Universal Time (UT) or Greenwich Mean Time (GMT), and fifteen hours ahead of Eastern Standard Time (EST) in the United States. You can use the following table to help you convert, or try the world time zone converter Tasmania (AET) 00 01 02 03 04 05 06 07 08 09 10 11 London (GMT) 14* 15* 16* 17* 18* 19* 20* 21* 22* 23* 00 01 New York (EST) 09* 10* 11* 12* 13* 14* 15* 16* 17* 18* 19* 20* Tasmania (AET) 12 13 14 15 16 17 18 19 20 21 22 23 London (GMT) 02 03 04 05 06 07 08 09 10 11 12 13 New York (EST) 21* 22* 23* 00 01 02 03 04 05 06 07 08 (* indicates on the previous day, 00=midnight, 12=noon etc.) Daylight savings begins on the first Sunday of October (clocks are turned forward one hour) and ends on the last Sunday in March (clocks are turned back one hour). During this period, the time zone is often called Australian Eastern Summer Time (AEST). If you are using the above chart in the months of October through March, add one hour to the Tasmanian time listed. Remember to account for daylight savings where you are too. If your browser supports Java applets, you will see a real-time clock showing the current time in Tasmania below.

59. Measuring Time time from geography World. Local times Around the World, Make Your Own Star Clock,Making a Horizontal Sundial, Making a Sun Clock, time Zone Converter, World http://www.aresearchguide.com/time.html

Measuring Time Links include both ancient and modern methods of measuring time. Ancient Egypt Water Clocks . A brief history of the ancient Egyptian waterclock. Astrolabe . Article describes the history and use of the Astrolabe. See 126 exquisite color photos of Astrolabes from European museums. The Astrolabe: An Instrument with a Past and a Future . The astrolabe is a very ancient astronomical computer for solving problems relating to time and the position of the sun and stars in the sky. Includes history, typical uses, and collections of Astrolabes. A Brief History of Clocks: From Thales to Ptolemy . Includes illustrations of clocks where available. Good diagram of a simple Water Clock . Information geared to more advanced students. The Calendar of Ancient Rome . Learn how the ancient Romans measured time with sundials, waterclocks and sand glasses. Calendars through the Ages : Calendars from the Sky. Topics covered: Our 7-day week (origin and meaning of names of days of the week), Our year, Calendars (Christian, Jewish, Islamic, Chinese, Mayan, etc.) plus other unusual and interesting subjects relating to time and calendars. Calendopaedia - THE Encyclopaedia of Calendars . Contents: Comparison of Calendars, Astronomical Calendar, Julian Calendar, Gregorian Calendar, Other Calendars, About Time, and Links to Other Sites. Includes a Complete Index of the Site.

60. Daylight Saving Time: A Look Back At "Springing Forward" Jennifer Vernon for National Geographic News Updated April 2, 2004. Most localeswill continue to observe standard time within their particular time zones. http://news.nationalgeographic.com/news/2004/03/0330_040330_daylightsavings.html

Sign up for our free e-mail newsletter Also see: Today's Top Stories This Story E-mail this story Sponsored in part by Win a National Geographic photo workshop in Santa Fe Looking for the ideal gift for Dad or Grads? Send the gift of National Geographic for a special price of $19! Daylight Saving Time: A Look Back at "Springing Forward" Jennifer Vernon for National Geographic News Updated April 2, 2004 Most people living in United States will set their clocks ahead one hour on Sunday, which marks the official start of nearly seven months of daylight saving time. So how do some folks get away with sticking to their clocks? Contrary to popular belief, no federal rule mandates that states or territories make the switch. Read the full A craftsman restores the clock face of Big Ben in London, England. The United Kingdom will mark the start of daylight saving time on Sunday at 1 a.m., one hour earlier than most states and territories of the United States. More News Kids News The Environment Travel National Geographic Channel Special Series Emerging Explorers TravelWatch National Geographic Out There Oceans ... Pulse of the Planet Federal law simply stipulates that areas that do observe daylight saving time, or DST, begin the period at 2 a.m. on the first Sunday in April. The rule requires that the period end at the same time on the last Sunday in October.

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