Redmine

A Redmine plugin that manages non-working days — public holidays, custom fixed dates, and recurring rules — and reflects them in Gantt charts and an external REST API.

Features¶

• Public holiday import — fetch public holidays per country/year via the Nager.Date API and register them with one click
• Custom fixed dates — register one-off non-working days (e.g. summer/winter company holidays)
• Recurring rules — define repeating non-working days using one of four patterns, each with an optional valid date range:
  • Specific day(s) of the month (e.g. the 15th and the last day)
  • Last day of the month
  • Nth weekday of the month (e.g. 2nd Friday)
  • Biweekly on a given weekday
• Gantt chart integration — non-working days registered here are excluded from Gantt schedule calculations alongside Redmine's standard day-off settings
• Calendar view — yearly and monthly calendar views color-coded by kind (public holiday / fixed date / recurring rule / Redmine standard day off), with a "+N" popup for days with many entries
• Bulk operations — select-all checkboxes and bulk delete for each list, plus a one-click "delete all" option (with confirmation)
• REST API — GET /non_working_days/api/days.json lets external systems query non-working days by year or date range
• i18n — English and Japanese included

Requirements¶

• Redmine 4.0 or higher

Tested Environment¶

	Version
Redmine	6.0.4.stable
Ruby	3.3.8-p144
Rails	7.2.2.1
Database	PostgreSQL

Other versions may work but have not been verified. Reports via Issues are welcome.

Screenshots¶

Administration — Non-Working Days List¶

English	Japanese

Plugin Settings¶

English	Japanese

Non-Working Days — Overview¶

English	Japanese

Fetch Public Holidays¶

English	Japanese

Add Fixed Date¶

English	Japanese

Add Recurring Rule¶

English	Japanese

Non-Working Days — Full List¶

English	Japanese

Standard Gantt Integration¶

English	Japanese

Easy Gantt Integration¶

English	Japanese

Demo Video¶

▶ 操作デモ動画を見る / Watch Operation Demo

Clone this repository into your Redmine plugins directory:

git clone https://github.com/SunnyEg-lab/redmine_non_working_days.git /path/to/redmine/plugins/redmine_non_working_days

Run database migrations:

bundle exec rake redmine:plugins:migrate RAILS_ENV=production

Restart Redmine.