Auspicious hours across the sixty-day stem-branch cycle

What the columns mean

id (string)

Stable row identifier, unchanged across versions

can_chi_ngay (string)

Sexagenary cycle of the day, sixty values

chi_ngay (string)

Earthly branch of the day only, i.e. the one that determines the hour table

chi_gio (string)

Earthly branch of the time slot

khung_gio (string)

Time slot in 24-hour clock

hoang_dao (string)

co when this time slot is a hoang dao hour, khong otherwise

nguon (string)

Source text for this row, or tinh-toan when the value is computed

ghi_chu (string)

Where the schools disagree on this row; empty when they do not

Licence and limitations

Released under CC BY 4.0: reuse commercially, adapt freely, attribution is all that is asked.

Nguồn: Nhật Nguyệt (nhatnguyet.org), CC BY 4.0

This dataset records cultural and calendrical conventions, not scientific claims. It is suitable for cultural research, NLP, and calendar applications. It is not intended for predicting events, evaluating people, or making decisions that affect anyone.

Source texts: Lịch vạn niên.

Other reference tables

• The ten heavenly stems
• Compatibility matrix of the 12 earthly branches
• The twelve earthly branches
• The twelve day officers (Thap Nhi Truc)
• The 22 Major Arcana of the Tarot
• The 24 solar terms
• The 56 Minor Arcana cards
• Sexagenary cycle table (60 Hoa Giap)
• The 64 hexagrams of the I Ching
• The nine presiding stars (Cuu Dieu)
• Zodiac sign boundaries year by year, 1950 to 2050
• Letter to number tables, Pythagorean and Chaldean
• Kua number and Bat Trach directions
• The sixty stem-branch pairs crossed: sounds, harmony, clash and element relation
• Vietnamese festivals mapped to solar dates, 2026 to 2030
• Vietnamese festivals, seasonal feasts and public holidays
• Vietnamese lunisolar calendar, 1900 to 2100
• Start moments of the 24 solar terms, 1900 to 2100
• Folk inauspicious days mapped onto solar dates, 2026 to 2035
• Tam Tai, Kim Lau and Hoang Oc by birth year and year in question
• Segments of the three Lo Ban rules

See every reference table