A year is the orbital period of a planetary body, for example, the Earth, moving in its orbit around the Sun. Due to the Earth's axial tilt, the course of a year sees the passing of the seasons, marked by change in weather, the hours of daylight, and, consequently, vegetation and soil fertility.
In temperate and subpolar regions around the planet, four seasons are generally recognized: spring, summer, autumn and winter. In tropical and subtropical regions, several geographical sectors do not present defined seasons; but in the seasonal tropics, the annual wet and dry seasons are recognized and tracked.
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; see below. For the Gregorian calendar, the average length of the calendar year (the mean year) across the complete leap cycle of 400 years is 365.2425 days. The ISO standard ISO 80000-3, Annex C, supports the symbol a (for Latin annus) to represent a year of either 365 or 366 days. In English, the abbreviations y and yr are commonly used.
In astronomy, the Julian year is a unit of time; it is defined as 365.25 days of exactly 86,400 seconds (SI base unit), totalling exactly 31,557,600 seconds in the Julian astronomical year.The word year is also used for periods loosely associated with, but not identical to, the calendar or astronomical year, such as the seasonal year, the fiscal year, the academic year, etc. Similarly, year can mean the orbital period of any planet; for example, a Martian year and a Venusian year are examples of the time a planet takes to transit one complete orbit. The term can also be used in reference to any long period or cycle, such as the Great Year.

View More On Wikipedia.org
  1. IMEI Source

    Miracle 1 Year Account Activation Renew - Cheap Price

    Miracle 1 Year Account Activation / Renew Visit: Miracle Box Activation IMEI Source® | Professional Unlocking Server - IMEI Source Pricing Levels IMEI Services | File Services | Server Services | Register | Login -=Best price=- Bulk Users, contact us. Place Order...
  2. IMEI Source

    Furious 1 Year Account Renew + Furious Gold Pack 1

    Furious 1 Year Account Renew + Furious Gold Pack 1 Click the Service URL for more information: Furious 1 Year Account Renew + Furious Gold Pack 1 Also Follow @ Furious Gold Credits / Activation We Accept .............. PayPal, PayPal MassPay/Gift, bKash, Western...
  3. IMEI Source

    GB-Key software activation for Infinity-Box [BEST] (Pack-1 for 1 year included)

    GB-Key software activation for Infinity-Box [BEST] (Pack-1 for 1 year included) We are Authorized Reseller (Worldwide) Click the Service URL for more information: GB-Key software activation for Infinity-Box [BEST] (Pack-1 for 1 year included) Also Follow @ Infinity Online Credits /...
  4. IMEI Source

    Infinity-Box or Dongle 2 year Updates, Support Renew, Chinese Miracle-2 included

    Infinity-Box/Dongle 2 years Updates/Support Renew, Chinese Miracle-2 included We are Authorized Reseller (Worldwide) Click the Service URL for more information: Infinity-Box/Dongle 2 years Updates/Support Renew, Chinese Miracle-2 included Also Follow @ Infinity Online Credits /...
  5. IMEI Source

    Furious 1 Year Account Renew + Furious Gold Pack 3

    Furious 1 Year Account Renew + Furious Gold Pack 3 Click the Service URL for more information: Furious 1 Year Account Renew + Furious Gold Pack 3 Also Follow @ Furious Gold Credits / Activation We Accept .............. PayPal, PayPal MassPay/Gift, bKash, Western...
  6. IMEI Source

    Furious 1 Year Account Renew + Furious Gold Pack 14

    Furious 1 Year Account Renew + Furious Gold Pack 14 Click the Service URL for more information: Furious 1 Year Account Renew + Furious Gold Pack 14 Also Follow @ Furious Gold Credits / Activation We Accept .............. PayPal, PayPal MassPay/Gift, bKash, Western...
  7. IMEI Source

    HCU Client 2 Year License

    HCU Client 2 Year License Click the Service URL for more information: HCU Client 2 Year License Also Follow @ HCU Client Credits / Activation We Accept .............. PayPal, PayPal MassPay/Gift, bKash, Western Money Transfer, MoneyGram. Bank Transfer (From...
  8. IMEI Source

    Furious 1 Year Account Renew + Furious Gold Pack 8

    Furious 1 Year Account Renew + Furious Gold Pack 8 Click the Service URL for more information: Furious 1 Year Account Renew + Furious Gold Pack 8 Also Follow @ Furious Gold Credits / Activation We Accept .............. PayPal, PayPal MassPay/Gift, bKash, Western...
  9. IMEI Source

    Furious 1 Year Account Renew + Furious Gold Pack 4

    Furious 1 Year Account Renew + Furious Gold Pack 4 Click the Service URL for more information: Furious 1 Year Account Renew + Furious Gold Pack 4 Also Follow @ Furious Gold Credits / Activation We Accept .............. PayPal, PayPal MassPay/Gift, bKash, Western...
  10. IMEI Source

    Infinity-Box or Dongle 1 year Updates, Support Renew, Chinese Miracle-2 included

    Infinity-Box/Dongle 1 year Updates/Support Renew, Chinese Miracle-2 included We are Authorized Reseller (Worldwide) Click the Service URL for more information: Infinity-Box/Dongle 1 year Updates/Support Renew, Chinese Miracle-2 included Also Follow @ Infinity Online Credits /...
  11. IMEI Source

    Furious 1 Year Account Renew

    Furious 1 Year Account Renew Click the Service URL for more information: Furious 1 Year Account Renew Also Follow @ Furious Gold Credits / Activation We Accept .............. PayPal, PayPal MassPay/Gift, bKash, Western Money Transfer, MoneyGram. Bank Transfer...
  12. IMEI Source

    HDE Tools Access for - 1 Year

    HDE Tools Access for - 1 Year Click the Service URL for more information: HDE Tools Access for - 1 Year Also Follow @ HDE Pack Activation We Accept .............. PayPal, PayPal MassPay/Gift, bKash, Western Money Transfer, MoneyGram. Bank Transfer (From Any...
  13. IMEI Source

    Furious 1 Year Account Renew + Furious Gold Pack 11

    Furious 1 Year Account Renew + Furious Gold Pack 11 Click the Service URL for more information: Furious 1 Year Account Renew + Furious Gold Pack 11 Also Follow @ Furious Gold Credits / Activation We Accept .............. PayPal, PayPal MassPay/Gift, bKash, Western...
  14. IMEI Source

    DC-Unlocker Activation (1 Year Support)

    DC-Unlocker Activation (1 Year Support) Click the Service URL for more information: DC-Unlocker Activation (1 Year Support) Also Follow @ DC Unlocker Activation We Accept .............. PayPal, PayPal MassPay/Gift, bKash, Western Money Transfer, MoneyGram. Bank...
  15. IMEI Source

    Furious 1 Year Account Renew + Furious Gold Pack 6

    Furious 1 Year Account Renew + Furious Gold Pack 6 Click the Service URL for more information: Furious 1 Year Account Renew + Furious Gold Pack 6 Also Follow @ Furious Gold Credits / Activation We Accept .............. PayPal, PayPal MassPay/Gift, bKash, Western...
  16. IMEI Source

    Infinity-Box or Dongle software act for Infinity CDMA-Tool, CM-2 + 1 year Support Inc

    Infinity-Box/Dongle software activation for Infinity CDMA-Tool, Chinese Miracle-2 and 1 year support included We are Authorized Reseller (Worldwide) Click the Service URL for more information: Infinity-Box/Dongle software activation for Infinity CDMA-Tool, Chinese Miracle-2 and 1 year...
  17. IMEI Source

    Uni-Android Tool 1 Year Activation

    Uni-Android Tool 1 Year Activation Click the Service URL for more information: Uni-Android Tool 1 Year Activation Also Follow @ Various Official Activations Reseller Welcome ----------------------- Get Discount on Bulk Quantity. We Accept .............. PayPal, PayPal...
  18. IMEI Source

    NCK Box Dongle 1 Year Huawei Module Activation

    NCK Box / Dongle 1 Year Huawei Module Activation We are Authorized Distributor (Worldwide) Click the Service URL for more information: NCK Box / Dongle 1 Year Huawei Module Activation Also Follow @ NCK Box / Dongle Activation Reseller Welcome ----------------------- Reseller...
  19. IMEI Source

    Furious 1 Year Account Renew + Furious Gold Pack 2

    Furious 1 Year Account Renew + Furious Gold Pack 2 Click the Service URL for more information: Furious 1 Year Account Renew + Furious Gold Pack 2 Also Follow @ Furious Gold Credits / Activation We Accept .............. PayPal, PayPal MassPay/Gift, bKash, Western...
  20. IMEI Source

    Infinity-Box or Dongle software Actvation for Infinity [BEST], CM-2 + 1 year support

    Infinity-Box/Dongle software activation for Infinity [BEST], Chinese Miracle-2 and 1 year support included We are Authorized Reseller (Worldwide) Click the Service URL for more information: Infinity-Box/Dongle software activation for Infinity [BEST], Chinese Miracle-2 and 1 year support...
Back
Top