{"ok":true,"result":{"slug":"julian-date-converter","name":"Julian Date Converter","summary":"Convert between calendar dates (UTC), Julian Date (JD), Modified Julian Date (MJD) and ordinal dates (YYDDD / YYYYDDD).","description":"Convert a UTC date and time to a Julian Date, Julian Day Number and Modified Julian Date, or to an ordinal YYDDD date, and convert any of them back.","method":"POST","endpoint":"/api/v1/tools/julian-date-converter","plan":"free","mcpName":"julian_date_converter","input":{"type":"object","additionalProperties":false,"properties":{"from":{"type":"string","description":"What the input is: calendar (YYYY-MM-DD date plus optional time), jd, mjd or ordinal (YYDDD or YYYYDDD).","enum":["calendar","jd","mjd","ordinal"],"maxLength":200000},"value":{"type":"string","description":"The input: \"2026-10-20\" for calendar, \"2451545.0\" for jd, \"51544.5\" for mjd, \"26293\" or \"2026293\" for ordinal.","maxLength":40},"time":{"type":"string","description":"calendar only: UTC time as HH:MM or HH:MM:SS. Defaults to midnight.","maxLength":8}},"required":["from","value"]},"example":{"from":"calendar","value":"2000-01-01","time":"12:00"},"randomOutput":false,"network":false,"docs":"https://pithlab.com/developers/tools/julian-date-converter","page":"https://pithlab.com/tools/julian-date-converter"}}