Peng Zu's 100 Taboos · Daily Reference | Traditional Calendar Suitability Query
Automatically calculates Heavenly Stems, Earthly Branches, Peng Zu Taboos, Huang Li suitability, and hourly taboos based on the Gregorian date. Fully local computation honoring traditional calendar wisdom.
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Peng Zu Taboos: Jia not opening granaries, Yi not planting... Daily suitability at a glance
What is Peng Zu's 100 Taboos?
Peng Zu's 100 Taboos is a set of daily prohibitions from traditional Chinese date selection culture, reportedly summarized and named after the legendary figure of longevity, Peng Zu. Based on the Heavenly Stems and Earthly Branches calendar system, it identifies activities that should be avoided on specific days and during specific two-hour periods. It has long been an essential part of the ancient Chinese almanac, or Tong Sheng.
The core principle is that the Heavenly Stem governs the day while the Earthly Branch governs the hour. Each of the ten Heavenly Stems corresponds to a daily taboo, such as "On a Jia day, do not open granaries." Each of the twelve Earthly Branches also carries an hourly taboo, such as "During the Zi hour, do not seek divination." Ancients believed that observing these taboos helped to seek good fortune and avoid misfortune, embodying a philosophy of acting in harmony with cosmic timing.
While it is not necessary to follow these rules rigidly in modern life, understanding Peng Zu's 100 Taboos provides valuable insight into ancient calendar wisdom and serves as a reference for those interested in traditional date selection or electing auspicious days for important events.
Understanding the Page Content
Lunar Date & Stem-Branch Chronology
Lunar Date: The traditional Chinese calendar, also known as the agricultural calendar, bases its months on the cycles of the moon. This tool automatically converts a Gregorian date to its lunar equivalent, displaying the year and month in Chinese characters.
Stem-Branch Year, Month, and Day: The sexagenary cycle, formed by pairing ten Heavenly Stems (Jia, Yi, Bing, Ding, Wu, Ji, Geng, Xin, Ren, Gui) with twelve Earthly Branches (Zi, Chou, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu, Hai), creates a 60-combination cycle. The year, month, and day each have their own stem-branch assignment, forming the backbone of the traditional Chinese timekeeping system.
Peng Zu's Taboo for the Day Stem
Displays the taboo proverb corresponding to the day's Heavenly Stem. For example, "Jia not opening granaries, wealth and goods will be lost" means that opening a warehouse on a Jia day is traditionally believed to lead to financial loss. There are ten proverbs in total, one for each stem.
Ji: No breaking contracts · Geng: No weaving · Xin: No mixing sauces · Ren: No drawing water · Gui: No litigation
Peng Zu's Taboo for the Hour Branch
These taboos correspond to the twelve two-hour periods, each governed by an Earthly Branch. Every period has a specific discouraged activity, such as "Zi hour: no divination" or "Chou hour: no donning caps and sashes." This tool presents the relevant Peng Zu prohibition for each individual hourly segment.
Suitable and Avoid Activities in the Chinese Almanac
Suitable Activities: Actions traditionally deemed favorable for the day, including weddings, travel, opening a business, and offering sacrifices. Activities to Avoid: Undertakings considered inauspicious, such as breaking ground, holding funerals, or felling timber. These recommendations are dynamically generated based on the day's stem-branch and the Twelve Establishments system.
Daily Clash, Sha Direction, and Fetal God Position
Clash and Sha: Indicates the zodiac sign that is in conflict with the day's energy. For example, "Clashes with the Horse (Sha in the South)" means those born in the year of the Horse may be adversely affected, and the southern direction is considered inauspicious. Fetal God: In traditional customs, the Fetal God is believed to occupy a specific location in the home each day. Disturbances such as hammering nails or construction work should be avoided in that area to protect pregnant women and their unborn children.
Twelve Hourly Periods Suitability
Divides the 24-hour day into twelve periods, each lasting two hours. Every period is marked as favorable, unfavorable, or neutral, accompanied by its specific Peng Zu hourly taboo. This allows users to assess the suitability of a particular time for specific activities.
Calculation Principles
1. Day Stem-Branch Calculation
A formulaic method derives the day pillar stem-branch from a Gregorian date, which is then used to match against the Peng Zu daily taboos.
2. Matching Peng Zu Taboos
Prohibitions like "Jia: no opening granaries" are output based on the day's Heavenly Stem, while hourly taboos like "Zi: no divination" are output based on the Earthly Branch of the hour.
3. Almanac Suitability and Avoidance
Based on the simplified rules of the Twelve Establishments and traditional almanac wisdom, appropriate daily suitability and avoidance suggestions are generated.
Use Cases
Traditional Date Selection: Query the daily suitability before important events like weddings, business openings, or moving house to choose an auspicious date.
Learning Traditional Culture: A hands-on way to study the Heavenly Stems, Earthly Branches, and the philosophy behind Peng Zu's Taboos.
Daily Fun and Insight: A lighthearted way to check the day's stem-branch and traditional taboos, adding a touch of cultural interest to daily life.
Hourly Precision: For tasks where timing down to the two-hour period is important, such as signing a critical contract or holding a major meeting, the hourly taboos and suitability can provide an extra layer of traditional reference.
Important Notes
For Reference Only: The content of this tool is derived from traditional calendar culture. All results are for entertainment and cultural reference and should not be the sole basis for making major life decisions.
Date Range: Supports Gregorian dates from the year 1900 to 2100.
Privacy Protected: This is a purely front-end implementation. All computations are performed locally in your browser, and no data is ever uploaded to any server.
Monthly Stem-Branch Note: The monthly stem-branch is determined by the traditional solar term system, where the Start of Spring marks the beginning of the first month. This may differ slightly from some other almanac versions.
Frequently Asked Questions
Q: What exactly is the Chinese Almanac Tong Sheng and how does it relate to date selection?
A: The Chinese Almanac, or Tong Sheng, is a traditional guide consulted for daily suitability, often used for selecting auspicious dates. It compiles astronomical data, stem-branch cycles, and folk beliefs to advise on the best times for activities like weddings and business openings. This tool replicates a core part of that tradition by using the day's stem-branch to determine suitable and avoidable actions.
Q: How are the Heavenly Stems and Earthly Branches used in an auspicious days calendar?
A: The ten Heavenly Stems and twelve Earthly Branches form a 60-day cycle that is fundamental to the Chinese calendar. Each combination carries unique energetic properties. In date selection, the stem of the day is the primary factor for taboos, while the branch influences clashes with zodiac signs. This calculator uses the sexagenary cycle to generate its advice, helping you understand the rhythm of cosmic influences.
Q: Can this tool be used for serious Feng Shui or Bazi consultations?
A: This is a practical, reference-based tool for cultural education and simple daily checks. It applies general rules for stem-branch taboos. For in-depth personal readings like a Bazi destiny analysis or professional Feng Shui assessments, you should consult a qualified practitioner who can consider the full complexity of your birth chart and environment.
Q: Why does the month in the lunar calendar sometimes differ from what I expect?
A: The lunar month in this tool aligns with the solar terms, a lunisolar system. The first month starts at Li Chun, the Start of Spring, which falls around February 4th. This is different from the Chinese New Year, which is based on the new moon. So a date in late January might be displayed as belonging to the previous lunar year's twelfth month, which is astronomically correct in this system.
Q: What is the meaning of the term "Fetal God" and why is its daily position tracked?
A: The Fetal God is a concept from Chinese folk tradition believed to reside in a specific compass direction within a household each day. It is considered harmful to the fetus if that area is disturbed by renovations, loud noises, or hammering. The tradition of tracking the Fetal God's location was a way to ensure a safe pregnancy, and this tool displays that position based on the day's Heavenly Stem.
Q: How is the "Clash and Sha" information practically interpreted?
A: "Clash" identifies the zodiac sign most likely to have a difficult or unlucky day. A person born under the sign that clashes with the day might want to avoid major decisions. "Sha" refers to an inauspicious direction. For example, if the Sha is South, it is traditionally advised not to break ground, start a long journey, or position one's back to that direction for important events, aiming to avoid negative energy.