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This is a list of calendars.Included are historical calendars as well as proposed ones. Historical calendars are often grouped into larger categories by cultural sphere or historical period; thus O'Neil (1976) distinguishes the groupings Egyptian calendars (Ancient Egypt), Babylonian calendars (Ancient Mesopotamia), Indian calendars (Hindu and Buddhist traditions of the Indian subcontinent ...
The calendar contains unique images and highlights historic space exploration milestones and educational facts about the international laboratory. Each month has its own theme and offers a glimpse into topics such as a typical day in the life of a crew member, the staff that supports the station, and the massive dimensions of the orbiting ...
The ancient Athenian calendar was a lunisolar calendar with 354-day years, consisting of twelve months of alternating length of 29 or 30 days. To keep the calendar in line with the solar year of 365.242189 days, an extra, intercalary month was added in the years: 3, 6, 8, 11, 14, 17, 19 of the 19-years Metonic cycle.
The World Calendar is a 12-month, perennial calendar with equal quarters. [ 1 ] Each quarter begins on a Sunday and ends on a Saturday. The quarters are equal: each has exactly 91 days, 13 weeks, or 3 months. The three months in each quarter have 31, 30, and 30 days respectively. Each quarter begins with the 31-day months of January, April ...
Google Earth was released for Android on February 22, 2010, [60] and on iOS on October 27, 2008. [61] [62] The mobile versions of Google Earth can make use of multi-touch interfaces to move on the globe, zoom or rotate the view, and allow to select the current location. An automotive version of Google Earth was made available in the 2010 Audi ...
t. e. A geographic coordinate system (GCS) is a spherical or geodetic coordinate system for measuring and communicating positions directly on Earth as latitude and longitude. [1] It is the simplest, oldest and most widely used of the various spatial reference systems that are in use, and forms the basis for most others.
File:Calendars world map.svg. Size of this PNG preview of this SVG file: 800 × 406 pixels. Other resolutions: 320 × 162 pixels | 640 × 325 pixels | 1,024 × 520 pixels | 1,280 × 650 pixels | 2,560 × 1,300 pixels | 2,754 × 1,398 pixels. This is a file from the Wikimedia Commons. Information from its description page there is shown below.
The WGS 84 (World Geodetic System 1984) which is a standard for use in cartography, geodesy, and satellite navigation including GPS, also has an equatorial radius of 6,378.137 km (3,963.191 mi). For both GRS 80 and WGS 84, this results in a length for the Equator of 40,075.0167 km (24,901.4609 mi).