Title: NACOSE Business Day Calendar Author: Hajime Baba Published: October 26, 2026 Last modified: October 26, 2026 --- Search plugins ![](https://ps.w.org/nacose-business-day-calendar/assets/icon.svg?rev=3767495) # NACOSE Business Day Calendar By [Hajime Baba](https://profiles.wordpress.org/hajimebaba/) [Download](https://downloads.wordpress.org/plugin/nacose-business-day-calendar.0.4.0.zip) * [Details](https://wordpress.org/plugins/nacose-business-day-calendar/#description) * [Reviews](https://wordpress.org/plugins/nacose-business-day-calendar/#reviews) * [Installation](https://wordpress.org/plugins/nacose-business-day-calendar/#installation) * [Development](https://wordpress.org/plugins/nacose-business-day-calendar/#developers) [Support](https://wordpress.org/support/plugin/nacose-business-day-calendar/) ## Description NACOSE Business Day Calendar shows a monthly calendar of the days your business is open and closed. * **Japanese public holidays are built in.** Fixed holidays, “Happy Monday” holidays, the equinoxes, substitute holidays and Citizens’ Holidays are calculated by the plugin for 2000-2099. No external service or API is used. * **Regular closing days by rule.** Choose weekdays (every Sunday) and “Nth weekday” days (2nd Monday, last Friday) from a simple table. Decide whether public holidays are closing days. * **Rules that change over time.** If your closing days change from a certain date, add a new rule with its start date. Past months keep showing the old rule. * **Temporary closings and special openings.** Register a whole period at once ( summer break, inventory days), optionally repeating every year (New Year break). A special opening overrides regular closing days and public holidays. * **Public holiday adjustments.** Remove a holiday or add your own on the settings page, for example after a change of the law, without touching code. * **Business hours.** Set default hours and different hours for single weekdays, and show them together with your regular closing days. * **Easy to show.** Add `[business_day_calendar]` to any page, post or widget. Colors and legend text can be changed. * **Accessible.** Closed days also carry text for screen readers, not only color. #### Shortcode * `[business_day_calendar]` – this month, with previous / next month links * `[business_day_calendar months="3"]` – several months * `[business_day_calendar month="2027-01"]` – a fixed month * `[business_day_calendar nav="no" legend="no"]` – hide the month links and the legend * `[business_day_today]` – a line such as “Today (10/21 Wed) is a business day.” It stays correct on pages kept by a page cache, because a small script picks today’s entry in the site time zone. * `[business_hours]` – business hours and regular closing days, for example “Mon- Fri: 9:30 – 18:30” and “Sunday, 2nd Monday, Public holidays”. Use `closed="no"` to hide the closing days. #### For developers The filter `bdcjp_holidays` lets you add, remove or rename public holidays for a year (for example after a change of the law). It receives an array of `'Y-m-d' = > 'name'` and the year. ## Installation 1. Upload the `nacose-business-day-calendar` folder to `/wp-content/plugins/`, or install the plugin from the Plugins screen. 2. Activate the plugin. 3. Open Settings > NACOSE Business Day Calendar and set your regular closing days. 4. Put `[business_day_calendar]` in a page. ## FAQ ### Which years are supported? Public holidays are calculated for 2000-2099. ### Does it send data to other sites? No. Holidays are calculated inside the plugin, and the plugin makes no external requests. ### The “today” mark in the monthly calendar is not on today’s date. If a page cache plugin is used, the cached page can show yesterday’s mark until the cache is refreshed. The closing days themselves are not affected. The `[business_day_today]` line is not affected, because it is updated in the browser. ### The law changed and a holiday is wrong. Use the `bdcjp_holidays` filter to correct it, and please report it in the support forum. ## Reviews There are no reviews for this plugin. ## Contributors & Developers “NACOSE Business Day Calendar” is open source software. The following people have contributed to this plugin. Contributors * [ Hajime Baba ](https://profiles.wordpress.org/hajimebaba/) [Translate “NACOSE Business Day Calendar” into your language.](https://translate.wordpress.org/projects/wp-plugins/nacose-business-day-calendar) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/nacose-business-day-calendar/), check out the [SVN repository](https://plugins.svn.wordpress.org/nacose-business-day-calendar/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/nacose-business-day-calendar/) by [RSS](https://plugins.trac.wordpress.org/log/nacose-business-day-calendar/?limit=100&mode=stop_on_copy&format=rss). ## Changelog #### 0.4.0 * Renamed to NACOSE Business Day Calendar. #### 0.3.1 * Load the bundled Japanese translation explicitly, so the settings page and the calendar are shown in Japanese on every site. #### 0.3.0 * Added public holiday adjustments (add or remove a holiday) to the settings page. * Added business hours, the `[business_hours]` shortcode, and hours in the `[business_day_today]` text. #### 0.2.0 * Added the `[business_day_today]` shortcode. #### 0.1.0 * First release. ## Meta * Version **0.4.0** * Last updated **2 days ago** * Active installations **Fewer than 10** * WordPress version ** 6.0 or higher ** * Tested up to **7.1.4** * PHP version ** 7.4 or higher ** * Tags * [business hours](https://wordpress.org/plugins/tags/business-hours/)[calendar](https://wordpress.org/plugins/tags/calendar/) [holidays](https://wordpress.org/plugins/tags/holidays/)[japan](https://wordpress.org/plugins/tags/japan/) * [Advanced View](https://wordpress.org/plugins/nacose-business-day-calendar/advanced/) ## Ratings No reviews have been submitted yet. [Your review](https://wordpress.org/support/plugin/nacose-business-day-calendar/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/nacose-business-day-calendar/reviews/) ## Contributors * [ Hajime Baba ](https://profiles.wordpress.org/hajimebaba/) ## Support Got something to say? Need help? [View support forum](https://wordpress.org/support/plugin/nacose-business-day-calendar/)