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Julian Day Calculator

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✖Reference Time is the time period for which statistical results are collected or calculated and to which, as a result, these values refer.ⓘ Reference Time [t_ref]			+10% -10%
✖Julian Century is used to simplify calculations of the positions of celestial objects in the sky, such as the sun, moon, and planets.ⓘ Julian Century [JC]			+10% -10%
✖The Julian day reference is a system used to represent dates and times in a standardized format.ⓘ Julian Day Reference [JD_ref]			+10% -10%

✖Julian Day refers to a system of timekeeping that is commonly used to synchronize various operations and events.ⓘ Julian Day [JD]

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Julian Day Solution

STEP 0: Pre-Calculation Summary

Formula Used

Julian Day = (Reference Time*Julian Century)+Julian Day Reference
JD = (t_ref*JC)+JD_ref
This formula uses 4 Variables

Variables Used

Julian Day - (Measured in Second) - Julian Day refers to a system of timekeeping that is commonly used to synchronize various operations and events.
Reference Time - Reference Time is the time period for which statistical results are collected or calculated and to which, as a result, these values refer.
Julian Century - (Measured in Second) - Julian Century is used to simplify calculations of the positions of celestial objects in the sky, such as the sun, moon, and planets.
Julian Day Reference - (Measured in Second) - The Julian day reference is a system used to represent dates and times in a standardized format.

STEP 1: Convert Input(s) to Base Unit

Reference Time: 1.4 --> No Conversion Required
Julian Century: 300 Day --> 25920000 Second (Check conversion here)
Julian Day Reference: 7 Day --> 604800 Second (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

JD = (t_ref*JC)+JD_ref --> (1.4*25920000)+604800

Evaluating ... ...

JD = 36892800

STEP 3: Convert Result to Output's Unit

36892800 Second -->427 Day (Check conversion here)

FINAL ANSWER

427 Day <-- Julian Day

(Calculation completed in 00.004 seconds)

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Created by Shobhit Dimri

Bipin Tripathi Kumaon Institute of Technology (BTKIT), Dwarahat

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< Satellite Orbital Characteristics Calculators

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LaTeX Go Local Sidereal Time = Greenwich Sidereal Time+East Longitude

Anomalistic Period

LaTeX Go Anomalistic Period = (2*pi)/Mean Motion

Julian Day Formula

LaTeX Go

Julian Day = (Reference Time*Julian Century)+Julian Day Reference
JD = (t_ref*JC)+JD_ref

What is Julian Calendar?

A calendar introduced by the authority of Julius Caesar in 46 BC, in which the year consisted of 365 days, every fourth year having 366 days.

How to Calculate Julian Day?

Julian Day calculator uses Julian Day = (Reference Time*Julian Century)+Julian Day Reference to calculate the Julian Day, The Julian Day formula is defined as the continuous count of days since the beginning of the Julian period, and is used primarily by astronomers, and in software for easily calculating elapsed days between two events. Julian Day is denoted by JD symbol.

How to calculate Julian Day using this online calculator? To use this online calculator for Julian Day, enter Reference Time (t_ref), Julian Century (JC) & Julian Day Reference (JD_ref) and hit the calculate button. Here is how the Julian Day calculation can be explained with given input values -> 0.004942 = (1.4*25920000)+604800.

FAQ

What is Julian Day?

The Julian Day formula is defined as the continuous count of days since the beginning of the Julian period, and is used primarily by astronomers, and in software for easily calculating elapsed days between two events and is represented as JD = (t_ref*JC)+JD_ref or Julian Day = (Reference Time*Julian Century)+Julian Day Reference. Reference Time is the time period for which statistical results are collected or calculated and to which, as a result, these values refer, Julian Century is used to simplify calculations of the positions of celestial objects in the sky, such as the sun, moon, and planets & The Julian day reference is a system used to represent dates and times in a standardized format.

How to calculate Julian Day?

The Julian Day formula is defined as the continuous count of days since the beginning of the Julian period, and is used primarily by astronomers, and in software for easily calculating elapsed days between two events is calculated using Julian Day = (Reference Time*Julian Century)+Julian Day Reference. To calculate Julian Day, you need Reference Time (t_ref), Julian Century (JC) & Julian Day Reference (JD_ref). With our tool, you need to enter the respective value for Reference Time, Julian Century & Julian Day Reference and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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