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1. ### Julian year (astronomy) - Wikipedia

en.wikipedia.org/wiki/Julian_year_(astronomy)

In astronomy, a Julian year (symbol: a) is a unit of measurement of time defined as exactly 365.25 days of 86 400 SI seconds each. The length of the Julian year is the average length of the year in the Julian calendar that was used in Western societies until the adoption of the Gregorian Calendar, and from which the unit is named.

• Usage

The Julian year is not a unit of measurement in the...

• Epochs

In astronomy, an epoch specifies a precise moment in time....

2. ### Julian year - Simple English Wikipedia, the free encyclopedia

simple.wikipedia.org/wiki/Julian_year_(astronomy)

In astronomy, a Julian year (symbol: a) is a unit to measure time.It has exactly 365 1 ⁄ 4 days of 86,400 seconds each. That is the average length of the year in the Julian calendar used in Western societies in previous centuries, and for which the unit is named.

3. ### Year - Wikipedia

en.wikipedia.org/wiki/Year

The Julian year, as used in astronomy and other sciences, is a time unit defined as exactly 365.25 days. This is the normal meaning of the unit "year" used in various scientific contexts. The Julian century of 36 525 days and the Julian millennium of 365 250 days are used in astronomical calculations. Fundamentally, expressing a time interval ...

What is a Julian year in astronomy?

What is the Julian year?

How long is a year in astronomy?

What is the current Julian Period?

5. ### Julian day - Wikipedia

en.wikipedia.org/wiki/Julian_day

Terminology. The term Julian date may also refer, outside of astronomy, to the day-of-year number (more properly, the ordinal date) in the Gregorian calendar, especially in computer programming, the military and the food industry, or it may refer to dates in the Julian calendar.

6. ### Talk:Julian year (astronomy) - Wikipedia

en.wikipedia.org/wiki/Talk:Julian_year_(astronomy)

The Julian year is in actual current usage as a time unit in astronomy (fundamentally a way to measure days, not years), whereas the Julian calendar is not in any actual current usage. Until today, the astronomy article was at Julian year, and that ought to be restored. -- Curps 03:43, 5 October 2005 (UTC) Oppose. The problems caused in the ...

7. ### Julian year (astronomy) — Wikipedia Republished // WIKI 2

wiki2.org/en/Julian_year_(astronomy)

In astronomy, a Julian year (symbol: a) is a unit of measurement of time defined as exactly 365.25 days of 86400 SI seconds each. The length of the Julian year is the average length of the year in the Julian calendar that was used in Western societies until some centuries ago, and from which the unit is named. Nevertheless, because astronomical Julian years are measuring duration rather than ...

8. ### Year - Wikipedia

sco.wikipedia.org/wiki/Year

The Julian year, as uised in astronomy an ither sciences, is a unit o time defined as exactly 365.25 days. Thes is the normal meanin o the unit "year" (seembol "a" frae the Laitin annus) uised in varioos scienteefic contexts. The Julian century o 36 525 days an the Julian millennium o 365 250 days ur uised in astronomical calculations ...

9. ### Julian year - Wiktionary

en.wiktionary.org/wiki/Julian_year

Nov 04, 2019 · Julian year (plural Julian years) ( historical ) A year in the old Julian calendar that has either 365 or 366 days. ( astronomy ) A unit of measurement of time defined as exactly 365.25 days of 86400 SI seconds each.

10. ### * Julian Year (Astronomy) - Definition - Online Encyclopedia

en.mimi.hu/astronomy/julian_year.html

The recent change to Julian year usage in dynamical astronomy (and the J2000.0 equinox) took effect in solar-system ephemerides of the Minor Planet Center and Central Bureau for Astronomical Telegrams on Jan. 1, 1992.