nextcloud / nextcloud/calendar

Adding secondary calendars

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1. to develop enhancement
Dominant language
JavaScript
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Merged PRs (30d)
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Description

Is your feature request related to a problem? Please describe.

Secondary calendars

Describe the solution you'd like

Secondary calendars (Persian Calendar or Jalali calendar in my case) to be shown along with Gregorian calendar. For example May 24, 2026 would be Khordad 3, 1405, or written in Persian:
سوم خرداد 1405

I believe there are other secondary calendars as well (Chinese calendar, Islamic calendar, etc.). This is a feature that would help Nextcloud be adopted in countries around the world which do not use Gregorian calendar.

Describe alternatives you've considered

No response

Additional context

No response

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

The issue names no files, tests, or entry points. Start by locating where Gregorian dates are rendered in the Calendar app and review how localization is handled. Define the supported secondary calendars and their display format, then verify that the Persian example appears alongside Gregorian dates.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript
Domain
frontend, localization
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
35/100

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