Julian Date Calendar 2024

Convert any 2024 calendar date to its Julian date (ordinal day of the year). The full-year reference table below runs from 001 on January 1 to 366 on December 31.

A Julian date (also called an ordinal date or day of year) numbers each day of 2024 from 001 to 366. It is the format printed on manufacturing lot codes, food-packaging date stamps, and military date-time groups. Find any date in the table below: read down to the day of the month and across to the month to get that day's Julian date. Because 2024 is a leap year, February has 29 days and the year runs to day 366.

DayJanFebMarAprMayJunJulAugSepOctNovDec
1001032061092122153183214245275306336
2002033062093123154184215246276307337
3003034063094124155185216247277308338
4004035064095125156186217248278309339
5005036065096126157187218249279310340
6006037066097127158188219250280311341
7007038067098128159189220251281312342
8008039068099129160190221252282313343
9009040069100130161191222253283314344
10010041070101131162192223254284315345
11011042071102132163193224255285316346
12012043072103133164194225256286317347
13013044073104134165195226257287318348
14014045074105135166196227258288319349
15015046075106136167197228259289320350
16016047076107137168198229260290321351
17017048077108138169199230261291322352
18018049078109139170200231262292323353
19019050079110140171201232263293324354
20020051080111141172202233264294325355
21021052081112142173203234265295326356
22022053082113143174204235266296327357
23023054083114144175205236267297328358
24024055084115145176206237268298329359
25025056085116146177207238269299330360
26026057086117147178208239270300331361
27027058087118148179209240271301332362
28028059088119149180210241272302333363
29029060089120150181211242273303334364
30030090121151182212243274304335365
31031091152213244305366

Key 2024 Julian dates

How to read the Julian date calendar

  1. Find the day of the month in the left column (1-31).
  2. Move across to the month column.
  3. The cell shows that date's Julian date (day of year), written as three digits.

Need today's date instead? Use our live Julian date calculator for the current Julian day number, ordinal date, and Modified Julian Date.

Julian Date Calendars for other years

Frequently asked questions

What is the Julian date for January 1, 2024?

January 1, 2024 is Julian date 001 (the first day of the year).

What is the Julian date for December 31, 2024?

December 31, 2024 is Julian date 366, the last day of 2024.

Is 2024 a leap year?

Yes. 2024 has 366 days, so Julian dates run from 001 to 366.

What is a Julian date?

In everyday use, a Julian date (or ordinal date) is the day of the year numbered 1 to 365 (366 in a leap year). It is widely used on manufacturing lot codes, food packaging, and in the military.

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