Tables
Julian Date Calendars
A printable Julian date (day-of-year) calendar for each year. Pick a year to see the full lookup grid, month-by-month ranges, and correct leap-year handling.
2020
366 days · leap year
2021
365 days · common year
2022
365 days · common year
2023
365 days · common year
2024
366 days · leap year
2025
365 days · common year
2026This year
365 days · common year
2027
365 days · common year
2028
366 days · leap year
2029
365 days · common year
2030
365 days · common year
2031
365 days · common year
2032
366 days · leap year
2033
365 days · common year
2034
365 days · common year
2035
365 days · common year
What is a Julian date calendar?
A “Julian date calendar” is a reference table that maps each calendar date to its day of the year — the ordinal “Julian date” used in manufacturing, food packaging and IT. January 1 is 001 and December 31 is 365 (or 366 in a leap year). These charts are widely printed and pinned up in production, warehouse and lab environments for quick lookups.
Choose the right lookup
| If you know… | Best starting point | Why |
|---|---|---|
| The exact year | A calendar above | It accounts for that year’s leap-day status. |
| Only a date in a common year | Common-year chart | One reusable table covers every 365-day year. |
| Only a date in a leap year | Leap-year chart | It correctly places 29 February at day 060. |
| A code, not a date | Date-code decoder | It validates the code and gives the weekday too. |
Avoid the most common lookup error
Do not reuse a common-year table for a leap year. January and February agree, but every date from 1 March onward is one day later in a leap year. For example, 1 March is day 060 in a common year and day 061 in a leap year. A year is a leap year when it is divisible by 4, except century years unless they are also divisible by 400.
Because leap years add a day at the end of February, the numbers from March onward differ between common and leap years. Each yearly calendar here is generated for that specific year so the values are always correct. Prefer a single perpetual chart? Use the non-leap day-of-year chart or the leap-year chart.