In ancient Thai astrology, numbers are not merely mathematical symbols — they carry energy and meaning deeply connected to the planetary ruler of each person's birth day. Auspicious numbers by birth day is therefore a discipline that people have taken interest in since antiquity, for according to this belief, choosing numbers that align with one's own planetary power helps strengthen one's life force and opens the way for good things to enter more easily.

What Are Thaksa and Planetary Power?

Before exploring the auspicious numbers for each day, it helps to understand the foundation of this discipline. Thaksa is a Thai astrological system that divides the numbers 1–8 into categories according to their qualities: Lakhana, Kasat, Maha-utom, Utom, Matchhima, Patini, Sayamaphu, and Marana — each carrying a distinct energetic significance.

Planetary power refers to the energy value assigned to each of the seven planetary rulers of the days of the week. According to Thai astrological texts, every planet carries its own specific numerical power. Combining both principles yields the auspicious numbers most suited to those born on each day. If you'd like to explore your own horoscope in detail, try our free fortune-reading tool as a starting point.

Auspicious Numbers for All 7 Days of the Week

According to Thai astrological texts, each planetary ruler of the day carries a corresponding power and set of numbers, as follows.

Sunday — The Sun, Power 6

Those born on Sunday are under the influence of the Sun, which according to this belief carries a power of 6. The primary auspicious numbers are 1, 6, 10, and 15, and any number whose digits sum to 1 or 6 is considered auspicious for those born on this day. These numbers convey leadership, stability, and the power of creation.

Monday — The Moon, Power 15

The Moon carries a power as high as 15 according to the texts. The auspicious numbers for those born on Monday are 2, 7, and 15, as well as any number whose digits sum to 2 or 7 — reflecting gentleness, compassion, and a refined inner sensitivity.

Tuesday — Mars, Power 8

Mars carries a power of 8 according to this belief. The auspicious numbers for those born on Tuesday are 3, 8, and 12. These numbers are associated with courage, determination, and the strength to overcome obstacles.

Wednesday — Mercury, Power 17

Mercury carries a power of 17, considered exceptionally high according to the texts. The auspicious numbers for those born on Wednesday are 4, 9, and 17, along with any number whose digits sum to 4 or 9 — reflecting intellect, communicative ability, and quick-witted thinking.

Thursday — Jupiter, Power 19

Jupiter holds a power of 19 and is regarded as the planet of prosperity according to this belief. The auspicious numbers for those born on Thursday are 5 and 19, including any number whose digits sum to 5 — signifying expansion, good fortune, and the wisdom of a teacher.

Friday — Venus, Power 21

Venus carries a power of 21 and is the planet of beauty and love according to the texts. The auspicious numbers for those born on Friday are 6 and 21, along with any number whose digits sum to 6 — conveying charm, harmonious relationships, and happiness in life.

Saturday — Saturn, Power 10

Saturn carries a power of 10 according to Thai astrological texts. The auspicious numbers for those born on Saturday are 7 and 10, as well as any number whose digits sum to 7 or 1 — associated with patience, depth of character, and the steady accumulation of good things in life.

How to Apply Auspicious Numbers in Daily Life

Knowing your auspicious numbers by birth day has many practical benefits in everyday life. According to Thai astrological belief, they can be applied in the following ways.

• Setting codes and various numbers — such as passwords, room numbers, or phone numbers that incorporate your birth day's auspicious numbers. According to this belief, doing so helps strengthen your energy in daily life.
• Choosing important dates — such as the day you sign a contract, launch a business, or get married. If the chosen date contains your auspicious numbers, the texts consider it an auspicious time that reinforces your planetary power.
• Choosing a house number or room number — numbers that align with your planetary power are believed to make that place more auspicious for you.
• Naming a business — many Thai astrologers recommend factoring in your birth day's auspicious numbers when choosing a business name, so that the numbers within the name align with your planetary energy.
• Setting numerical goals — such as income targets or quantities that relate to your auspicious numbers, in order to create motivation that resonates with your personal energy.

If you'd like detailed and personalised guidance for your own horoscope, you can consult directly with our specialist astrologers for a comprehensive analysis covering Thaksa, planetary power, and other elements of your birth chart.

Additional Things to Know About Auspicious Numbers

While auspicious numbers by birth day offer an interesting framework within Thai astrological belief, there are some important points worth understanding.

• Auspicious numbers are simply a tool for strengthening one's mindset — not a guaranteed formula for any particular outcome in life.
• Different schools of thought may assign slightly different planetary powers and auspicious numbers, depending on the astrological lineage they follow.
• One's overall destiny also depends on other factors, such as the ascendant sign, the planets in the birth chart, and the current planetary transits.
• Auspicious numbers should be used with a calm and mindful spirit — without becoming so attached to them that they unduly influence real-life decisions.

Frequently Asked Questions About Auspicious Numbers by Birth Day

If I was born on Sunday but Saturn is strong in my birth chart, which day's auspicious numbers should I use?

According to Thai astrological texts, the primary auspicious numbers are still based principally on the day of birth. However, if another planet in the birth chart exerts a strong influence, some astrologers recommend incorporating that planet's auspicious numbers as well, in order to more fully encompass the energies present in the chart. Consulting a specialist will help you get an answer tailored specifically to your own horoscope.

How do auspicious numbers by birth day in Thai astrology differ from Western Numerology?

Auspicious numbers by birth day in Thai astrology are based on the principles of Thaksa and planetary power, developed from ancient Thai astrological texts. Western Numerology, by contrast, is based on calculating the date of birth down to a single number. The two systems have different origins and methodologies, yet both have dedicated practitioners and serious students within their respective cultures.

Can multiple auspicious numbers be used at the same time?

Yes. According to Thai astrological belief, using several auspicious numbers from the same birth day simultaneously is not considered contradictory, since they all fall under the power of the same planet. For example, someone born on Wednesday might use 4, 9, and 17 in different contexts. What matters most is using them mindfully and with an understanding of what each number means.

Auspicious numbers by birth day represent one strand of Thai astrological wisdom that has been passed down over a very long time. According to this belief, knowing and understanding the power of your own numbers allows you to live in greater harmony with your planetary energy. Whether you place great faith in this or only a little, having a framework that helps bolster your confidence in daily life is something of value in its own right. If you'd like to follow your horoscope and auspicious numbers on a regular basis, subscribe to our personalised daily horoscope to receive information tailored specifically to your birth day and birth chart.