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

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! 🙌