Your Thai birth day

Your Thai birth day among the eight (seven weekdays with Wednesday split into day and night), its colour, presiding celestial body and guardian Buddha image; your kalakini colour from the taksa wheel; and your Thai zodiac year under the two solar conventions.

The weekday comes from plain calendar arithmetic, then the Thai boundary rules are applied: the day starts at 06:00, so 00:00–05:59 counts as the previous day, and Wednesday 18:00–05:59 belongs to Rahu. The kalakini is the eighth seat of the fixed taksa cycle counted from your birth day. Every table on this page is pinned to cited sources and re-checked by automated tests, including the anchor that King Rama IX, born 5 December 1927, was a Monday person — the reason Thailand honours him in yellow.

We do not cast the full Thai horoscope (horasat) — that needs the real positions of ten celestial bodies and Thai school rules we have not verified against an ephemeris. We do not compute the Thai lunisolar calendar, so we cannot reproduce the birth-certificate zodiac convention, and we say so. And we do not print per-day personality verdicts: the folk trait tables differ from source to source, so repeating one as fact would be invention.

Thai astrology works with eight celestial guardians — the seven planets of the week plus Rahu, the eclipse deity — but a week has only seven days. Tradition solved it by dividing Wednesday: 06:00–17:59 belongs to Mercury, and 18:00 to 05:59 the next morning belongs to Rahu. That is why a Thai temple's day-of-birth shrine has eight Buddha images, not seven.

In the traditional Thai count a day does not begin at midnight but at 06:00. Someone born on a Thursday at 03:00 is counted as a Wednesday-night person, under Rahu. If you enter your birth time, this page applies that boundary for you; if you leave it out, we show every branch instead of quietly picking one.

From the taksa cycle, the same eight-seat wheel Thai tradition uses for naming children. Starting from your birth day, the seats run in the fixed order Sun, Moon, Mars, Mercury, Saturn, Jupiter, Rahu, Venus — and the eighth seat is kalakini, the one to avoid. Whichever day lands there, its colour is your kalakini colour. It is pure arithmetic on the wheel, not a judgement we invented.

Because Thailand itself uses more than one boundary for when the animal year changes: 1 January in modern popular use, mid-April (Songkran / Thaloengsok) in astrological and northern practice, and a lunar-calendar date on official birth certificates. For births between January and mid-April these give different animals, so we show both answers with their labels instead of declaring one correct.