Recurrence Rule

• CURIE: gmeow:RecurrenceRule
• IRI: https://blackcatinformatics.ca/gmeow/RecurrenceRule
• Category: class
• Defined by: gmeow:slices/events
• Box roles: TBox role (What is this?)

A rule by which a gmeow:EventSeries repeats — weekly, every-first-Monday, annually. Carries an RFC 5545 RRULE string via gmeow:recurrenceRuleText. (= ISO-TimeML TIMEX3 type=SET with freq/quant, iCalendar RRULE, schema:Schedule, TEO periodic time interval.)

Structure

Subclass of: gmeow:InformationObject

Practical Pattern

Use gmeow:RecurrenceRule as a specialized kind of gmeow:InformationObject. Add statement metadata or a standpoint when the assertion needs provenance, confidence, or vantage.

Example Snippets

These snippets are generated from canonical slice examples and trimmed to the Turtle blocks where this term appears.

Recurring Meeting

• Source: slices/core/calendar/examples/recurring-meeting.ttl
• Examples catalog: open in catalog#example-slices-core-calendar-examples-recurring-meeting

# SPDX-FileCopyrightText: 2026 Blackcat Informatics® Inc. <paudley@blackcatinformatics.ca>
# SPDX-License-Identifier: CC-BY-4.0
#
# Worked example: a recurring meeting with invitations. A gmeow:EventSchedule
# repeats a TEMPLATE event by a gmeow:RecurrenceRule (an RFC 5545 RRULE string),
# all anchored in an explicit gmeow:TimeZone (IANA id) — so "every Monday 09:00"
# is unambiguous across DST. Invitations are reified gmeow:EventInvitations
# carrying both the organiser-side gmeow:invitationStatus and the invitee's own
# gmeow:rsvpStatus. The event's kind is an open vocabulary: there is no seed
# "meeting" EventType, so one is minted (the custom-value idiom, P9).
@prefix gmeow: <https://blackcatinformatics.ca/gmeow/> .
@prefix ex:    <https://blackcatinformatics.ca/gmeow/examples/calendar/> .
@prefix rdfs:  <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd:   <http://www.w3.org/2001/XMLSchema#> .

ex:weekly a gmeow:RecurrenceRule ;
    gmeow:recurrenceRuleText "FREQ=WEEKLY;BYDAY=MO" .

Common Companion Terms

gmeow:InformationObject

External Equivalences

Equivalent or closely aligned targets: schema

Linkages

Generated from the canonical mapping DSL. SSSOM files are the generated public interchange form for term equivalences.

Term Equivalences

Usage Advice

Use when

• Use for the rule by which a gmeow:EventSeries repeats — weekly, every-first-Monday, annually — carrying an RFC 5545 RRULE string.

Avoid when

• Avoid attaching it to a single gmeow:Event occurrence (the rule belongs to the series), and avoid authoring rich recurrence structure in core — the RRULE string is the source, richer form is a projection concern.

How to use

• Mint a gmeow:RecurrenceRule with an RFC 5545 string on gmeow:recurrenceRuleText and link it from the series via gmeow:hasRecurrenceRule; projectors emit iCalendar RRULE directly.

Examples

• ex:weeklyMon a gmeow:RecurrenceRule; gmeow:recurrenceRuleText "FREQ=WEEKLY;BYDAY=MO".