Your birth chart is probably half an hour wrong

About 24.9% of people born in Peninsular Malaysia or Singapore before 1982 have the wrong main star — because the timezone that year was not UTC+8. How that was measured

Free BaZi and Purple Star Astrology charts, corrected to true solar time

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Used for true solar time and the timezone in force that year.

What half an hour changes

One real birth moment: 5pm on 18 February 1950, Kuala Lumpur. Malaysia's clocks were half an hour behind today's that year (UTC+7:30, not +8).

On today's clock that is the Rooster hour (You, 酉). On the clock of 1950, and by where the sun actually was, it is the Monkey hour (Shen, 申). Different hour, different chart.

Uncorrected: today's clock

Birth hour
Rooster hour (You, 酉)
Main star
The Elder (Tian Liang, 天梁) — at its weakest
Chart type
The Steward: built for structure — steady, capable, works best inside a system
Later life
centres on Travel
Luck decades
begin at age 4
Classic patterns
Salary and Horse together (禄马交驰格)

Corrected: the 1950 clock, and where the sun was

Birth hour
Monkey hour (Shen, 申)
Main star
The Voice (Ju Men, 巨门) — strong here
Chart type
The Herald: built to be heard — visible, persuasive, works through voice
Later life
centres on Career
Luck decades
begin at age 3
Classic patterns
Jade hidden in stone (石中隐玉格)
Salary and Horse together (禄马交驰格)

A different main star, a different chart type, a different focus for later life, and luck decades that begin at a different age. The corrected chart also has a classic pattern the other lacks. Same person, two different readings.

See this chart in full

What a reading contains

All of it free, and all of it computed from the birth moment. Nothing is written in advance and fitted to you afterwards.

Chart type

Which of four types your chart is, and what that means in practice.

What your birth year marked

The four areas of life your birth year permanently changed.

Named formations

Twenty-four classical arrangements, each with its rule and how often it occurs.

The six difficult stars

Where obstruction sits, and how well placed it is.

Day master strength

What you have in reserve, with the three classical tests shown.

Decades and years

Which ten-year stretches run with you, and which years to take care in.