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② 後台搜尋「Astrowave Simple Event Calendar」→ 直接安裝（推薦）
原文外掛簡介
Astrowave Simple Event Calendar is a lightweight calendar for shops and facilities. No ACF required.
Features
One shortcode: [astrowave_event_calendar]
Closed weekdays: Mark weekly closed days
Optional public holidays: Off by default (no network). When enabled:
Japan (JP) → holidays-jp (better coverage for substitute / “国民の休日”)
Other countries → Nager.Date
Manual holidays: Always available — YYYY-MM-DD Name (overrides API on the same date)
3 event types: Normal / Closed / Special
PC & mobile: Popup / bottom sheet
How to use
Activate the plugin
Add events (date, type, message, link)
Calendar Notes (Administrators): footnotes, closed weekdays, optional holidays + country, manual holidays
Place [astrowave_event_calendar] on a page
Shortcode
[astrowave_event_calendar]
Month: ?cal_month=2026-08 (default: current month)
External services
This plugin can optionally connect to third-party holiday APIs. These requests are off by default. They run only when an administrator enables “public holidays” under Calendar Notes. Results are cached in WordPress transients. API base URLs are fixed in the plugin (users cannot enter arbitrary URLs). If an API fails, the calendar still works; manual holiday lines remain available.
holidays-jp (Japan only, when country
JP) =
What: Public JSON of Japanese national holidays (including substitute holidays).
When: Once per year of calendar data (cached); only if holidays API is ON and country is JP.
Data sent: Year number in the request URL path only. No personal or site user data.
Website: https://holidays-jp.github.io/
Terms / license (MIT): https://github.com/holidays-jp/holidays-jp.github.io/blob/master/LICENSE
Privacy: Hosted on GitHub Pages; see GitHub Privacy Statement — https://docs.github.com/en/site-policy/privacy-policies/github-general-privacy-statement
Nager.Date (other countries)
What: Public holidays by country code.
When: Once per year + country (cached); only if holidays API is ON and country is not JP.
Data sent: Country code and year only. No personal or site user data.
Website: https://date.nager.at/
Terms: https://date.nager.at/Terms
Privacy: https://date.nager.at/Privacy
Not included
Recurring events, date ranges, admin color pickers, unlimited types. Kept Simple.
Astrowave Simple Event Calendar は開館日向けの軽量カレンダーです。
ショートコード [astrowave_event_calendar]
定休日の曜日
祝日APIはデフォルトOFF。ON時: 国=JPは holidays-jp、他国は Nager.Date（詳細は External services）
カレンダー補足の保存は管理者（manage_options）のみ
手入力の祝日は常に有効（同日は手入力優先）
PCポップアップ / スマホボトムシート
