建除十二神 - Twelve Day Officers

Auspicious Date Finder

Enter an activity and date range to see traditionally favourable, neutral, and challenging days based on the almanac day-officer system. Optional: add your birth year to flag days that clash with your zodiac.

Search Parameters

Maximum 90 days per search.
Optional
If born before ~February 4 in that year, your zodiac may belong to the prior year. Used only to flag days that clash with your zodiac animal.

See today's full almanac reading: day officer, element, and daily guidance in the Daily Almanac.

Today's Almanac

How This Works

  • ◆System: The Twelve Day Officers (建除十二神, Jianzhu Shi'er Shen) is a traditional Chinese almanac system that assigns one of twelve officers to each day based on the relationship between the day's earthly branch and the solar month branch. Each officer carries traditional guidance on activities that are favoured (宜) or cautioned against (忌).
  • ◆Calculation: Officer index = ((day branch - month branch) + 12) % 12. The day branch comes from the sexagenary day pillar using the same anchor date (1900-01-31 = Jia Zi) as the Bazi calculator. The month branch is derived from the solar month (节气 boundary), consistent with the daily almanac on this site.
  • ◆Activity mapping: Each activity maps to a set of traditionally favoured and traditionally cautioned officers. Days that match neither list are classified as neutral. These mappings follow classical almanac tradition and are simplified for general use.
  • ◆Zodiac clash: Each day has a "clash zodiac" (the animal six positions away in the 12-branch cycle). A day that clashes with your own zodiac animal is traditionally considered less suitable for important activities. This is flagged as an overlay on top of the officer rating.
  • ◆What this is not: A complete date selection system. Professional择日 (date selection) involves multiple factors including year branch, month branch, personal Bazi, and specific hour selection. This tool provides a simplified almanac-based layer for cultural reference only. Many practitioners and families use this type of guidance as a starting point, not a final word.
Simplified almanac for cultural reference. Not professional date-selection advice. Individual circumstances vary greatly, and traditional almanac practice involves many additional considerations beyond the officer system alone.