DEV Community: Heng LOEM

Khmer Hybrid Calendar v1.1.0 Released — Complete Holidays, UNESCO Heritage & 10x Faster 🚀

Heng LOEM — Wed, 30 Sep 2026 10:58:55 +0000

Excited to announce the release of khmer-hybrid-calendar v1.1.0 on npm! 🇰🇭✨

If you're building applications that need Cambodian holidays, Khmer lunar dates, Buddhist observance days (ថ្ងៃសីល/ថ្ងៃកោរ), or international & Chinese calendar integrations, this update brings major enhancements and performance improvements.

📦 What's New in v1.1.0

1. 🪷 Expanded Buddhist & Khmer Lunar Observances

Buddhist Lent Ceremonies: Added Candle Making Day (ពិធីសិតទៀន), Dragon Monk Ordination (បំបួសនាគខ្នាន), and Lent Entry (ចូលព្រះវស្សា).
Dynamic Waning Observances: Accurate waning Kaor day (ថ្ងៃកោរ) and end-of-month Sil day (ថ្ងៃសីល ដាច់ខែ) calculated for 29 vs 30-day lunar months.
Pchum Ben Closing Day: Added the final transition day (ថ្ងៃឆ្លងភ្ជុំបិណ្ឌ).

2. 🏛️ Cambodian National & UNESCO Heritage Days

UNESCO World & Intangible Heritage: Added anniversaries for Koh Ker, Kun Lbokator, Khmer Krama, Royal Ballet, Sbek Thom, Chapei Dang Veng, and Tuol Sleng Archives.
Historical Observances: National Fish Day, Cambodia's UNESCO accession, and official commemoration days.

3. 🌍 54 International & Chinese Calendar Observances

Expanded to 54 official international days (UN & global observances).
Added Chinese New Year's Eve (ថ្ងៃសែនចូលឆ្នាំចិន) and festival calculations.

4. ⚡ 10x Performance Boost

Optimized astronomical ephemeris calculations and date-range filtering, cutting generation times by over 90%.

🚀 Quick Start

npm install khmer-hybrid-calendar

import calendar from 'khmer-hybrid-calendar';

// Convert Gregorian to Khmer Lunar Date
const khmerDate = calendar.gregorianToKhmer(2026, 4, 14);
console.log(`${khmerDate.lunarDay} ខែ${khmerDate.monthName}`); 
// Output: 14កើត ខែចេត្រ

// Check if a date is a public holiday
const isHoliday = calendar.isHoliday(new Date('2026-04-14'));
console.log(isHoliday); // true (Khmer New Year Day 1)

// Generate iCal (.ics) feed
const ics = calendar.generateICalFeed(2026);

Check it out on npm or GitHub. Feedback and contributions are welcome! 🙌

Show My IDs — Telegram Bot

Heng LOEM — Thu, 17 Sep 2026 04:49:18 +0000

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Thank you for using Show My IDs! 🇰🇭

I built a Khmer Hybrid Calendar package for JavaScript/TypeScript

Heng LOEM — Fri, 17 Jul 2026 03:10:41 +0000

Hey everyone!

I just released khmer-hybrid-calendar – a library that combines Gregorian and Khmer lunar calendars in one easy-to-use package.

Why I built it:

The Khmer calendar is an important part of Cambodian culture, used to determine holidays, religious observances, and traditional events. However, there weren't many modern, well-maintained libraries for developers to integrate this functionality into their applications. I created this to bridge that gap.

Key features:

✅ Accurate Khmer lunar date conversion with moon phase emojis
✅ Complete list of Cambodian national holidays and Buddhist observances
✅ Support for Chinese lunar festivals (New Year, Mid-Autumn, etc.)
✅ iCal feed generation for any year
✅ Full TypeScript support with bundled declarations
✅ Works in Node.js, browser, and React/Next.js applications

Example use:

typescript

import { KhmerCalendar } from 'khmer-hybrid-calendar';

const calendar = new KhmerCalendar();
const khmerDate = calendar.gregorianToKhmer(2026, 4, 13);
console.log(khmerDate.lunarDay); // "១៥កើត"

I'd love to hear your feedback, ideas, or any questions you have!

🔗 GitHub: https://github.com/hengloem/khmer-hybrid-calendar-package
📦 npm: https://www.npmjs.com/package/khmer-hybrid-calendar

opensource #javascript #khmer #calendar