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Hebcal

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io.github.hebcal/hebcalv0.9.9

Model Context Protocol extension for Hebrew calendar

Utilities

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convert-gregorian-to-hebrew

Converts a Gregorian (civil) date to a Hebrew date (Jewish calendar)

datestring, required

Gregorian date (in yyyy-MM-dd format) to convert

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Tools

Hebcal MCP server | mcptry

convert-gregorian-to-hebrew

Converts a Gregorian (civil) date to a Hebrew date (Jewish calendar)

Argument	Type	Description
date*	string	Gregorian date (in yyyy-MM-dd format) to convert

Input schema (JSON)

{
  "type": "object",
  "required": [
    "date"
  ],
  "properties": {
    "date": {
      "type": "string",
      "description": "Gregorian date (in yyyy-MM-dd format) to convert"
    }
  },
  "additionalProperties": false
}

convert-hebrew-to-gregorian

Converts a Hebrew date to a Gregorian (civil) date

Argument	Type	Description
day*	integer	Hebrew day of month
year*	integer	Hebrew year
month*	string	Hebrew month name transliterated, like Elul or Tishrei

Input schema (JSON)

{
  "type": "object",
  "required": [
    "day",
    "month",
    "year"
  ],
  "properties": {
    "day": {
      "type": "integer",
      "description": "Hebrew day of month"
    },
    "year": {
      "type": "integer",
      "description": "Hebrew year"
    },
    "month": {
      "type": "string",
      "description": "Hebrew month name transliterated, like Elul or Tishrei"
    }
  },
  "additionalProperties": false
}

daf-yomi

Calculates the Daf Yomi (Babylonian Talmud) learning for a specified date

Argument	Type	Description
date*	string	Gregorian date in yyyy-MM-dd format

Input schema (JSON)

{
  "type": "object",
  "required": [
    "date"
  ],
  "properties": {
    "date": {
      "type": "string",
      "description": "Gregorian date in yyyy-MM-dd format"
    }
  },
  "additionalProperties": false
}

jewish-holidays-year

Calculates a list of all Jewish holidays during a Gregorian (civil) year

Argument	Type	Description
year*	integer	Gregorian year

Input schema (JSON)

{
  "type": "object",
  "required": [
    "year"
  ],
  "properties": {
    "year": {
      "type": "integer",
      "description": "Gregorian year"
    }
  },
  "additionalProperties": false
}

shabbat-times

Generates Shabbat and holiday candle-lighting and Havdalah times for a given location and date range

Argument	Type	Description
tzid*	string	Olson timezone ID (e.g. "America/Chicago", "Europe/Moscow")
endDate*	string	End date in yyyy-MM-dd format
latitude*	number	Latitude as decimal, valid range -90 to +90 (e.g. 41.85003)
longitude*	number	Longitude as decimal, valid range -180 to +180 (e.g. -87.65005)
startDate*	string	Start date in yyyy-MM-dd format

Input schema (JSON)

{
  "type": "object",
  "required": [
    "latitude",
    "longitude",
    "tzid",
    "startDate",
    "endDate"
  ],
  "properties": {
    "tzid": {
      "type": "string",
      "description": "Olson timezone ID (e.g. \"America/Chicago\", \"Europe/Moscow\")"
    },
    "endDate": {
      "type": "string",
      "description": "End date in yyyy-MM-dd format"
    },
    "latitude": {
      "type": "number",
      "description": "Latitude as decimal, valid range -90 to +90 (e.g. 41.85003)"
    },
    "longitude": {
      "type": "number",
      "description": "Longitude as decimal, valid range -180 to +180 (e.g. -87.65005)"
    },
    "startDate": {
      "type": "string",
      "description": "Start date in yyyy-MM-dd format"
    }
  },
  "additionalProperties": false
}

torah-portion

Calculates the weekly Torah portion (also called parashat haShavua) for a specified date

Argument	Type	Description
il*	boolean	True if in Israel, false for Diaspora
date*	string	Gregorian date in yyyy-MM-dd format

Input schema (JSON)

{
  "type": "object",
  "required": [
    "date",
    "il"
  ],
  "properties": {
    "il": {
      "type": "boolean",
      "description": "True if in Israel, false for Diaspora"
    },
    "date": {
      "type": "string",
      "description": "Gregorian date in yyyy-MM-dd format"
    }
  },
  "additionalProperties": false
}

yahrzeit

Calculates the Yahrzeit, the anniversary of the day of death of a loved one, according to the Hebrew calendar for a specified date

Argument	Type	Description
date*	string	Gregorian date of death (in yyyy-MM-dd format)
afterSunset*	boolean	after sunset

Input schema (JSON)

{
  "type": "object",
  "required": [
    "date",
    "afterSunset"
  ],
  "properties": {
    "date": {
      "type": "string",
      "description": "Gregorian date of death (in yyyy-MM-dd format)"
    },
    "afterSunset": {
      "type": "boolean",
      "description": "after sunset"
    }
  },
  "additionalProperties": false
}