Julian Date

datetime.date.julian

Short-form Julian date with 2-digit year and 3-digit day-of-year. Common in manufacturing, logistics, and food expiration dates.

Domain

datetime

Try it

CLI

$ finetype infer -i "24-015"
→ datetime.date.julian

DuckDB

Detect

SELECT finetype('24-015');
-- → 'datetime.date.julian'

Cast expression

strptime(concat('20', {col}), '%Y-%j')::DATE

Safe cast pipeline

-- Normalise and cast in one step
SELECT TRY_CAST(finetype_cast(my_column) AS DATE) AS clean_value
FROM my_table
WHERE finetype(my_column) = 'datetime.date.julian';

JSON Schema

finetype schema datetime.date.julian

{
  "$id": "https://meridian.online/schemas/datetime.date.julian",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "description": "Short-form Julian date with 2-digit year and 3-digit day-of-year. Common in manufacturing, logistics, and food expiration dates.",
  "examples": [
    "24-015",
    "23-365"
  ],
  "maxLength": 6,
  "minLength": 6,
  "pattern": "^\\d{2}-\\d{3}$",
  "title": "Julian Date",
  "type": "string",
  "x-finetype-broad-type": "DATE",
  "x-finetype-transform": "strptime(concat('20', {col}), '%Y-%j')::DATE"
}

Examples

24-01523-365