| Planet_Observer Displays country and ocean maps, followed by demographic data on each reviewed area. |
| Readmap_Project Online maps collection with political and economical overview of each country. |
| TerraFly Searchable aerial views of cities and towns in the United States. |
| TerraServer View maps and aerial photos of various parts of the Earth. |
| United_Nations__Cartographic_Section General country and special issues maps. |
| United_States_Library_of_Congress_Map_Collections Top-level categories include cities and towns, cultural, landscapes, conservation and environment, military battles and campaigns, discovery and exploration, transportation and communication. Searchab |
| Windows_Live_Local Combines online mapping and local search, uses a scratch pad to take notes, and allows to search questions around the United States in a geographical context. |
| Atomic_Clock_Time Displayed in a variety of useful formats. Site is a front-end to U.S. government atomic clocks. |
| The_Calendar Summarizes the history of various calendars developed and used over the centuries. |
| Calendar_Studies Information about calendar history and calendar reform. |
| Calendar_Zone A categorized collection of calendar related sites. |
| Date_Algorithms Provides descriptions, proofs and computer programming implementation examples to convert dates to various calendar dates for Julian, Gregorian, and Rata Die calendars. |
| English_Calendar Includes an ecclesiastical calendar and a section on old and new style dating. |
| A_Few_Facts_Concerning_GMT,_UT,_and_the_RGO Explains the differences between several time systems. |
| Infoplease__Daylight_Saving_Time Information and history about Daylight Saving Time all over the world. |
| International_Standard_Date_and_Time_Notation An overview of the ISO 8601 notation for dates. |
| Light_of_Day Shedding light on Queensland's daylight saving opposition. |
| NIST_Time_and_Frequency_Division The National Institute of Standards and Technology maintains time and frequency standards for the United States. |
| NPR___\'Seize_the_Daylight\'__A_History_of_Clock_Chaos Benjamin Franklin first called for the government to tinker with clock hours in the 1780s. But it wasn't until World War I that the United States adopted daylight-saving time as a way to get more ef |
| This_Day_In_History Today in history every day - often with pictures and sound. |
| Time Provides descriptions of several standards of time. |
| Time_FAQ Frequently Asked Questions about time (from sci.astro news group) |
| Time_References To set your watch or clock accurately using a time reference. Explains the various options for residents of North America. |
| Time_Zone_and_Daylight_Saving_Time_Data A directory of sites providing descriptions of civil timekeeping concepts, source code, databases, and maps. |
| Today\'s_Calendar_and_Clock_Page Information on all things relating to calendars, dates, holidays, and time. Find today's date on several different cultural and religious calendars. Includes section on Celestial data, countdown cloc |
| United_States_Code Weights, measures and standard time. |
| U_S__Time_Zones History of standard time in the U.S. |
| A_Walk_Through_Time Evolution of timekeeping through the centuries. |
| BloomsburyMagazine_Research_Centre Offers literature reference searches powered by bloomsbury reference books. |
| Book_Sale_Finder Guide to used book fairs and sales across the USA. |
| Centre_for_the_History_of_the_Book History, projects, and events. |
| Creative_Nonfiction_Magazine Journal includes online essays and book reviews as well as links for the Goucher College MFA in Creative Nonfiction. |
| Instruction_Manuals_UK Instruction manuals for products sold in the United Kingdom. |
| International_ISBN_Agency Includes a user's manual, prefix ranges, details of group agencies, publications, reports, and news. |
| ISBN_Tools Information and tools for using International Standard Book Numbers. Scan them with a CueCat, look them up, or search them. |
| ISBN_org Enables applications to be made for ISBNs, SANs, and ISMNs in the United States and Puerto Rico, and provides information about the standards. |
| Library_of_Economics_and_Liberty Economics classics online, featured essays, letters to the editor, and data links by topic. |
| Nonfiction___Religion_Book_Reviews Collection of reviews by Skylar Hamilton Burris. |
| Resource_Central_-_Books_Online Resource links in finding books on the net. |
| Waddleton_Chronology Attempt to collect and record all books having colour-printed illustrations or decorations from 15th century up to 1893. |
Paths(e.g.,ORD-HKG,SFO-SYD,London-Tokyo)Ranges(e.g.,8000nm@LHR,1300nm@DAL)Path ColordefaultredorangeyellowgreenbluevioletnavycyanmagentablackPath DistanceminmkmhideMin. DistanceMark locations along path Ground Speed or MachktsmphkphMachRange StylebestoutlineshadedOutline ColordefaultredorangeyellowgreenbluevioletnavycyanmagentablackwhiteMap Styledefaulttopoorthoazeqi ETOPS Rule-Time 60 minutes 90 minutes 120 minutes 138 minutes 180 minutes 207 minutes 240 minutes 330 minutesLocationsmay be specified using FAA, IATA, or ICAOairport codes, or bylatitude and longitude. You can alsosearchfor a code: See the Great Circle MapperFAQ for further information.Get information about an airport code: 
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