Two calendars can give different lunar dates for the same solar day because they use different legal time zones, such as Vietnam at UTC+7 and China at UTC+8.
Lunar to solar conversion uses no fixed addition table. It relies on the new moon point, major solar terms and legal time zones, so it differs year by year.
The Hour of the Rat runs from 11 p.m. to 1 a.m. A table of all 12 watch-hours in clock time, plus the two ways of setting the day boundary at midnight.
Updated 15 Oct 2026Calendar and astronomy
Knowledge › Vietnam › Vietnamese commemorative days
World Environment Day on June 5 was designated by the UN General Assembly in 1972 and is led by UNEP. Learn about its history, purpose and significance.
Online Bát Tự charts build fast, but accuracy hinges on birth hour data, time zone, and solar terms. Know when to trust them and when a reader must verify.
The Khao Le The Linh Hoang Sa ceremony on Lý Sơn, Quảng Ngãi honours Hoang Sa soldiers with orations and model boats set adrift before Tứ Linh boat races.
Tarot is a self-reflection tool, not psychotherapy. This analysis covers the safe boundary, signs of misuse, and when to see a mental health professional.
The Hue Imperial City sits on the north bank of the Perfume River, using Ngự Bình Mountain as its front screen and Hen and Dã Viên islets as its flanks.
Nham mountain sits in the North of the 24 mountain directions, tied to the Water element and the Kan trigram, symbolizing beginnings, wisdom and flexibility.
Dinh Cậu Phú Quốc Festival falls on the 15th and 16th of the 10th lunar month, with Nghinh Cậu, Yết Cậu and Chinh Te rituals honouring Chúa Ngọc Nương Nương.
The Khmer (Khơ Me) numbered 1,319,652 in the 2019 survey, live mainly in the Mekong Delta, speak a Mon-Khmer language, and worship Buddha and ancestors.
The Dậu direction in the 24-direction feng shui system sits due West and belongs to the Metal element. Here is its meaning for house and grave orientation.
Maturity Number 5 in numerology comes from your Life Path and Destiny numbers. It points to freedom and adaptability as your growth goal in later life.
Each point where Vietnamese calendrical, feng shui and divination sources disagree, with the reading taken here, the competing reading still in circulation, and what changes when you compare two sources. Every reference table has to pick one; most pick and say nothing.