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The sidereal year differs from the solar year, "the period of time required for the ecliptic longitude of the Sun to increase 360 degrees", [2] due to the precession of the equinoxes. The sidereal year is 20 min 24.5 s longer than the mean tropical year at J2000.0 (365.242 190 402 ephemeris days) .
The basic time periods from which the calendar is constructed are the Martian solar day (sometimes called a sol) and the Martian vernal equinox year.The sol is 39 minutes 35.244 seconds longer than the Terrestrial solar day, and the Martian vernal equinox year is 668.5907 sols in length (which corresponds to 686.9711 days on Earth).
Tic-tac-toe A completed game of tic-tac-toe Other names Noughts and Crosses Xs and Os Genres Paper-and-pencil game Players 2 Setup time Minimal Playing time ~1 minute Chance None Skills Strategy, tactics, observation Tic-tac-toe (American English), noughts and crosses (Commonwealth English), or Xs and Os (Canadian or Irish English) is a paper-and-pencil game for two players who take turns ...
A calendar year is an approximation of the number of days of the Earth's orbital period, as counted in a given calendar.The Gregorian calendar, or modern calendar, presents its calendar year to be either a common year of 365 days or a leap year of 366 days, as do the Julian calendars.
A light-year, alternatively spelled light year (ly or lyr [3]), is a unit of length used to express astronomical distances and is equal to exactly 9 460 730 472 580.8 km, which is approximately 9.46 trillion km or 5.88 trillion mi.
9 years, 2 months iPad Air 2: October 16, 2014 iOS 8.1: October 22, 2014 March 21, 2017 iPadOS 15.8.3: July 29, 2024 9 years, 9 months iPad Air (3rd generation) March 18, 2019 iOS 12.2: March 18, 2019 September 15, 2020 iPadOS 18.3.1: January 27, 2025 5 years, 10 months iPad Air (4th generation) September 15, 2020 iPadOS 14.1: October 23, 2020
The iPad Air (5th generation), colloquially known as the iPad Air 5 or iPad Air M1, is a tablet computer developed and marketed by Apple Inc. It was announced by Apple on March 8, 2022. [ 2 ] Pre-orders began on March 11, 2022, and shipping began on March 18, 2022.
One galactic year is approximately 225 million Earth years. [2] The Solar System is traveling at an average speed of 230 km/s (828,000 km/h) or 143 mi/s (514,000 mph) within its trajectory around the Galactic Center, [ 3 ] a speed at which an object could circumnavigate the Earth's equator in 2 minutes and 54 seconds; that speed corresponds to ...