# Lịch Việt Nam

> Vietnamese calendar web application for solar/lunar calendar lookup, Vietnamese holidays, Can Chi, Ngũ hành, good-day tools, horoscope utilities, historical date information, and private browser-based personal calendar notes.

Primary language: Vietnamese (`vi-VN`).
Canonical site: https://al.eplus.dev

## Core calendar

- [Home / current calendar](https://al.eplus.dev/): Current Vietnamese solar and lunar calendar with holidays and personal-calendar UI.
- [Year pages](https://al.eplus.dev/2026): Calendar overview for a specific Gregorian year. Replace `2026` with the desired year.
- [Month pages](https://al.eplus.dev/2026/8): Calendar for a specific year and month. Route format: `/{year}/{month}`.
- [Date pages](https://al.eplus.dev/2026/8/20): Solar date with corresponding lunar date and Can Chi. Route format: `/{year}/{month}/{day}`.
- [Detailed date information](https://al.eplus.dev/day-info/2026/8/20): Extended information for a specific date.

## Utilities

- [Calendar tools](https://al.eplus.dev/tools): Solar ↔ lunar conversion, age/date calculations and date comparison.
- [Find a good day](https://al.eplus.dev/find-good-day): Filter and rank dates for common purposes.
- [Horoscope](https://al.eplus.dev/horoscope): Vietnamese zodiac / 12-con-giáp utility.
- [Historical dates](https://al.eplus.dev/history): Historical events by date or month.
- [Multi-month calendar](https://al.eplus.dev/multi-month): View several months together.
- [Holiday statistics](https://al.eplus.dev/stats): Calendar and holiday statistics.
- [Calendar quiz](https://al.eplus.dev/quiz): Vietnamese calendar knowledge quiz.

## Machine-readable discovery

- [Sitemap index](https://al.eplus.dev/sitemap.xml): Entry point for all published sitemaps.
- [Static sitemap](https://al.eplus.dev/sitemaps/static.xml): Public feature and utility pages.
- [Year sitemap example](https://al.eplus.dev/sitemaps/2026.xml): Year, month, date and selected day-information URLs for that year.
- The published year-sitemap window rolls automatically from 10 years before the current year through 4 years after it.
- [Robots](https://al.eplus.dev/robots.txt): Crawler policy.
- [Full AI context](https://al.eplus.dev/llms-full.txt): Detailed route semantics, features and data notes.

## Important data note

Personal events, notes and reminders created by a user are stored locally in that user's browser. They are not public website content, are not part of the sitemap, and should not be treated as site-provided facts.