Julian Date Converter

Convert the calendar date to julian date and vice versa(CYYDDD format to DD/MM/YYYY format).
Enter either a Calendar date, or a Julian date and click Calculate.

CE BCE   Universal Time
 year  month day  hr min sec
 
 Julian date    weekday
 
    Calendar date to Julian date
    Julian date to Calendar date


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    How to use this Julian Date Converter Tool?

    How to use Yttags's Julian Date Converter?

    • Step 1: Select the Tool
    Julian Date Converter Step 1
    • Step 2: Enter The Following Options And Click On The Calculate Button And Check Your Julian Date Converter Result
    Julian Date Converter Step 2

    What is Today's Julian Date? 2023 Julian date converter app. Convert Gregorian date into Julian date. Free printable julian date calendar 2023.


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    Julian Date Converter

    FAQs for Julian Date Converter

    What is a Julian Date Converter?
    A Julian Date Converter is a tool or software that converts dates on the Gregorian calendar into Julian dates, which are a continuous count of days since January 1, 4713 BCE.
    Why do we use Julian date?
    The Julian date is widely used with computers because it requires less programming to compare dates that are single integers. Julian numbers are also used within a single year; for example, February 1 is Julian 32.
    How do you determine Julian date?
    The Julian date (JD) is a continuous count of days from 1 January 4713 BC (= -4712 January 1), Greenwich mean noon (= 12h UT1). For example, AD 1978 January 1, 0h UT1 is JD 2443509.5 and AD 1978 July 21, 15h UT1, is JD 2443711.125.
    Why is it called a Julian date?
    The Julian calendar is the name given to the revised Roman calendar that was introduced by Julius Caesar (with the advice of an astronomer) in 46 BCE and took effect in 45 BCE. The calendar fixed the length of a year at 365 days, divided into twelve months, with a leap day added to February every fourth year.
    Where is Julian date used?
    The Julian day is 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 (e.g. food production date and sell by date).