仕様書

関連

[1] 計算機システムにおける暦の指定も参照。

メモ

[5] RFC 7529 - Non-Gregorian Recurrence Rules in the Internet Calendaring and Scheduling Core Object Specification (iCalendar) ( ()) https://tools.ietf.org/html/rfc7529#section-4

; recur-rule-part is extended from RFC 5545

recur-rule-part =/ ("RSCALE" "=" rscale)

/ ("SKIP" "=" skip)

rscale = (iana-token ; A CLDR-registered calendar system

; name.

/ x-name) ; A non-standard, experimental

; calendar system name.

; Names are case insensitive,

; but uppercase values are preferred.