Skip to content

Document the Umm al-Qura range currently known in browsers in terms of ISO/Gregorian #41418

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
Josh-Cena merged 2 commits into from
Oct 7, 2025
Merged

Document the Umm al-Qura range currently known in browsers in terms of ISO/Gregorian #41418

Changes from 1 commit
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
6c05555
Document the Umm al-Qura range currently known in browsers in terms o…
hsivonen Oct 7, 2025
3836d11
Fix Markdown table formatting
hsivonen Oct 7, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion ...s/en-us/web/javascript/reference/global_objects/intl/supportedvaluesof/index.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -72,7 +72,7 @@ Below are all values that are commonly supported by browsers for the `calendar`
| `hebrew` | Traditional Hebrew calendar |
| `indian` | Indian calendar |
| `islamic` | Hijri calendar, unspecified algorithm. **Note:** As of April 2025, this is an astronomical simulation whose parameters are undocumented and that is not known to match a specific Hijri calendar variant from non-software contexts. For well-specified results, use one of the three specific variants: `islamic-umalqura`, `islamic-tbla`, or `islamic-civil`. |
| `islamic-umalqura` | Hijri calendar, Umm al-Qura (uses KACST-calculated months from the start of 1300 AH to the end of 1600 AH and falls back to `islamic-civil` outside that range) |
| `islamic-umalqura` | Hijri calendar, Umm al-Qura (uses KACST-calculated months from the start of 1300 AH (1882-11-12 ISO) to the end of 1600 AH (2174-11-25 ISO) and falls back to `islamic-civil` outside that range) |
| `islamic-tbla` | Hijri calendar, tabular/rule-based with leap year rule II (leap years 2,5,7,10,13,16,18,21,24,26,29 in the 30-year cycle (1-based numbering)) and Thursday/astronomical epoch (July 15, 622 Julian / 0622-07-18 ISO) |
| `islamic-civil` | Hijri calendar, tabular/rule-based with leap year rule II (leap years 2,5,7,10,13,16,18,21,24,26,29 in the 30-year cycle (1-based numbering)) and Friday/civil epoch (July 16, 622 Julian / 0622-07-19 ISO) |
| `iso8601` | ISO calendar (variant of the Gregorian calendar with week rules and formatting parameters made region-independent) |
Expand Down
Loading