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Julian Day & Day of Year

Find the astronomical Julian day number and ordinal day of the year.

01

Enter your details

Your calculation runs without creating an account.

02

Your result

Enter the values to see a clear, explainable result.

HOW IT WORKS

Understand your result

Find the astronomical Julian day number and ordinal day of the year.

Dates are calculated from the values you provide. Where a rule depends on local law, holidays, medical guidance or travel eligibility, confirm the relevant official source.

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