f9ad1e52ed
toHijri() now passes Date.UTC(year, month, date) to hijri-core instead of the raw instant from this.toDate(). Fixes wrong-Hijri-day results around UTC-midnight on hosts east or west of UTC. Lock-step with hijri-core fix/utc-day-boundary.
2.2 KiB
dayjs-hijri-plus
A Day.js plugin that adds Hijri calendar support. Converts Gregorian dates to and from Hijri, provides Hijri-aware formatting, and delegates all calendar logic to hijri-core.
Supports Umm al-Qura (UAQ) and FCNA/ISNA calendars. Custom engines can be registered at runtime.
Installation
pnpm add dayjs dayjs-hijri-plus hijri-core
Both dayjs and hijri-core are peer dependencies.
Quick Start
import dayjs from 'dayjs';
import hijriPlugin from 'dayjs-hijri-plus';
dayjs.extend(hijriPlugin);
const d = dayjs('2023-03-23');
d.toHijri(); // { hy: 1444, hm: 9, hd: 1 }
d.formatHijri('iD iMMMM iYYYY'); // '1 Ramadan 1444'
d.formatHijri('iYYYY-iMM-iDD'); // '1444-09-01'
dayjs.fromHijri(1444, 10, 1).format('YYYY-MM-DD'); // '2023-04-21'
Documentation
Full API reference, examples, and architecture notes are on the GitHub Wiki.
Day boundaries and time zones
.toHijri() converts the calendar date the dayjs instance displays — the same date you would read off the screen — regardless of the host's system timezone or whether the dayjs utc plugin is active. A call like dayjs('2025-03-01').toHijri() always maps the 1st of March 2025, not whatever local instant that string resolves to in UTC.
Religious start-of-day at sunset is out of scope. Sunset-aware day boundaries require external prayer-time data and are not handled here.
Related
- hijri-core: the zero-dependency Hijri calendar engine this plugin wraps
- luxon-hijri: the same conversion for Luxon users
- pray-calc: Islamic prayer time calculation
License
MIT. Copyright (c) 2026 Aric Camarata.