Nhật Nguyệt

Knowledge / Vietnam

Ancestor worship

Why Vietnamese worship on the first day of the lunar month: the meaning of the Sóc day in folk belief

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Vì sao người Việt cúng mồng Một đầu tháng: ý nghĩa ngày Sóc trong tín ngưỡng dân gian

Ảnh: Không rõ tác giả, Wikimedia Commons (CC BY-SA 4.0)

TL;DR: The Sóc day (first day of the lunar month) marks the start of the moon cycle; Vietnamese worship ancestors and deities to pray for smoothness and luck for the whole month. This custom reflects yin-yang philosophy, respect for ancestors, and hope for a good beginning.

What is the Sóc day?

In Eastern culture, the first day of each lunar month is called Sóc, derived from the astronomical new moon when the moon lies between the Earth and the sun, making it invisible from the ground. This marks the beginning of a new lunar cycle, symbolizing renewal and birth. Vietnamese people believe that the Sóc day is a time of cosmic transition, when yin and yang energies blend, making it an auspicious moment for worship and offerings.

Origin and philosophical basis

The custom of worshiping on the first day of the month originates from wet-rice agricultural beliefs and the yin-yang harmonious worldview of ancient Vietnamese. The moon's cycle governs seasons, tides, and human activities. The Sóc day is considered a day of deities and the universe, a time for humans to express reverence to supernatural forces and ancestors, praying for a smooth and lucky month ahead.

Spiritual and feng shui meanings

New beginning and warding off bad luck

According to folk belief, the first day of the month is a time when cosmic energy shifts. Burning incense and making offerings help cleanse misfortunes of the previous month and welcome new positive energy. Many also avoid major undertakings or harsh words on this day, fearing they may affect the whole month.

Connecting with ancestors and deities

Offerings on the Sóc day are usually dedicated to ancestors, the Earth God, and the God of Wealth (if applicable) to report household affairs and seek blessings. Maintaining the incense fire symbolizes the continuous presence of ancestors in daily life, strengthening the bond between generations.

Offerings for the Sóc day

A typical offering tray is simple and includes:

  • Incense, fresh flowers, clean water
  • Betel and areca nuts, tea, wine
  • Rice and salt (symbolizing abundance)
  • Seasonal fruits or a five-fruit tray
  • Optionally, sticky rice, sweet soup, or vegetarian dishes depending on family conditions

For business families, additional offerings are made to the God of Wealth and Earth God to pray for prosperous trade.

Prayer text

The prayer is recited with sincerity; exact wording is not mandatory. It generally includes:

  • Invoking the deities governing the household (Earth God, Kitchen God)
  • Invoking ancestors and deceased family members
  • Reporting the Sóc day of the new month
  • Praying for peace, luck, and health for the whole family
  • Promising to do good deeds and live virtuously

Difference between the first day and the full moon day

AspectFirst day (Sóc)Full moon (Vọng)
MeaningBeginning, seeking luckMid-month, thanksgiving
Moon phaseNo moon (dark)Full moon (bright)
OfferingsUsually simpleCan be more elaborate
TimeEarly morningAfternoon or evening

Both aim for peace, but Sóc focuses on beginnings, while Vọng emphasizes completeness.

Modern perspective and practical notes

In contemporary society, many young Vietnamese still maintain the custom as a way to preserve cultural identity, even if they do not fully believe in the spiritual aspect. Worship should be civilized, economical, and free from superstition. The key is sincere attitude and virtuous living, not the size of the offering tray.

Cultural experts suggest that living well, doing good deeds, and being filial to parents are more meaningful than any grand offering. However, maintaining this small ritual gives people a moment of reflection, gratitude, and connection to their roots.

Conclusion

The custom of worshiping on the first day of the lunar month (Sóc day) is not merely a religious ritual but a cultural symbol reflecting a philosophy of harmony with nature, respect for ancestors, and aspiration for a better life. Understanding its deep meaning helps us appreciate traditional values while adapting practice to modern life.

Frequently asked questions

Is it mandatory to worship on the morning of the first day of the lunar month?

Traditionally, Vietnamese worship on the morning of the first day, usually from 6 to 9 a.m., as it is the start of a new day with strong yang energy. However, if busy, you can worship later in the day as long as you keep sincerity. The key is to perform it with respect, not to be overly strict about time.

Do people of other religions (like Buddhism, Catholicism) worship on the first day?

It depends on the religion. Buddhists often visit pagodas on the first and fifteenth days, and may offer vegetarian meals at home. Catholics do not perform folk ancestral worship rituals, but may light incense or place flowers before an ancestor altar as a remembrance, as long as it does not conflict with doctrine. Essentially, the spirit of goodness and remembering one's roots is universal.

Should we offer meat or vegetarian dishes on the first day?

Choosing meat or vegetarian dishes depends on each family's conditions and beliefs. Many families offer vegetarian food on the first day to express purity and Buddhist orientation. However, if the family does not follow Buddhism, offering meat dishes like boiled chicken, sticky rice, or pork is perfectly normal. The most important thing is sincerity and solemnity in the ritual.

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References

  1. Bài văn khấn ngày mồng Một và ngày Rằm chuẩn nhất - Lao Động
  2. Phan Kế Bính, Việt Nam phong tục (1915)
  3. Toan Ánh, Nếp cũ - Tín ngưỡng Việt Nam

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