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Tong Shu Calendar Reference

Auspicious ROM Dates for July 2026註冊結婚 · July 2026

By Master Sean Chan · Updated

This month carries Xiao Shu (小暑) — month flips to 未 on July 7 (Singapore time): the BaZi calendar's sectional boundary for the month. Below is the universal Chinese metaphysics ranking of every day in July 2026 for civil registration of marriage (ROM in Singapore), derived from the classical Tong Shu (通書). ROM uses a tighter rule set than a full ceremonial wedding — registration is a single act that benefits from 開 (Opening) and 成 (Completing) days and avoids 閉 (Closing) days more strictly than a full banquet.

Top-ranked dates this month

31
days in July
27
pass hard requirements
7
rank as 上吉
5
top picks below
DateDay PillarOfficer 建除 Mansion 宿Clash 沖Class
12026-07-26甲辰Gathering戌 (Dog)上吉
22026-07-31己酉滿 Filling卯 (Rabbit)上吉
32026-07-21己亥Stabilising巳 (Snake)上吉
42026-07-13辛卯Completing酉 (Rooster)上吉
52026-07-16甲午Closing子 (Rat)上吉

All days in July 2026

DateDay PillarOfficerMansion ClashNotable factorsClass
2026-07-01己卯酉 Rooster建除 收 · 黃道
2026-07-02庚辰戌 Dog建除 開
2026-07-03辛巳亥 Pig月德合 · 建除 閉 · 宿 井
2026-07-04壬午子 Rat建除 建 · 黃道
2026-07-05癸未丑 Ox
2026-07-06甲申滿寅 Tiger黃道
2026-07-07乙酉滿卯 Rabbit宿 張
2026-07-08丙戌辰 Dragon建除 平 · 黃道
2026-07-09丁亥巳 Snake建除 定 · 宿 軫 · 黃道上吉
2026-07-10戊子午 HorseFailed requirement: not_year_break大凶
2026-07-11己丑未 GoatFailed requirement: not_month_break大凶
2026-07-12庚寅申 Monkey建除 危 · 宿 氐 · 黃道
2026-07-13辛卯酉 Rooster建除 成 · 宿 房 · 黃道上吉
2026-07-14壬辰戌 Dog建除 收 · 宿 心
2026-07-15癸巳亥 Pig建除 開 · 黃道
2026-07-16甲午子 Rat天德 · 月德 · 建除 閉上吉
2026-07-17乙未丑 Ox建除 建 · 宿 斗
2026-07-18丙申寅 Tiger黃道
2026-07-19丁酉滿卯 Rabbit宿 女
2026-07-20戊戌辰 Dragon建除 平 · 黃道
2026-07-21己亥巳 Snake天德合 · 月德合 · 建除 定上吉
2026-07-22庚子午 HorseFailed requirement: not_year_break大凶
2026-07-23辛丑未 GoatFailed requirement: not_month_break大凶
2026-07-24壬寅申 Monkey建除 危 · 黃道
2026-07-25癸卯酉 Rooster建除 成 · 黃道上吉
2026-07-26甲辰戌 Dog天德 · 月德 · 建除 收上吉
2026-07-27乙巳亥 Pig建除 開 · 黃道
2026-07-28丙午子 Rat建除 閉
2026-07-29丁未丑 Ox建除 建
2026-07-30戊申寅 Tiger黃道
2026-07-31己酉滿卯 Rabbit天德合 · 月德合 · 宿 井上吉
Personalised next step

BaZi-Aligned Date Report — July 2026

USD 388

A personalised PDF that re-ranks every ROM / civil registration-suitable day in July 2026 against your BaZi (and, for weddings/ROM, your partner’s BaZi). It surfaces:

Order the report →

See the full glossary of classical date-selection terms in the BaZi Glossary & Auxiliary Stars.

Further reading from the blog

Selected posts from Master Sean Chan's blog covering this topic and closely related ones in practice:

Frequently asked

Why isn’t my day on the list of top 5?

The top list is the universal ranking before any personal adjustment. Many couples find their best date isn’t in the top 5. Once you account for your day pillars, the right day often shifts. That’s exactly the gap the BaZi-Aligned Date Report fills.

What does 大凶 mean and can it ever be overridden?

大凶 means the day fails a hard classical requirement: 月破 (month break), 歲破 (year break), or 四離/四絕 (a quarter-day boundary). These cannot be overridden by personal alignment; they are excluded categorically. Choose another day.

Why don’t you show times here?

Hour selection is personal. The right hour depends on your day pillar and the chosen day’s element relationship to it. Publishing universal “auspicious hours” misleads readers into thinking a generic hour is safe; it isn’t. Hours are included in the personalised report.

Where do these scores come from?

The classical Tong Shu (通書) tradition: 建除十二神 (Twelve Officers), 二十八宿 (Twenty-Eight Mansions), 月德 / 天德 (monthly and yearly virtue stars), 黃黑道 (Yellow/Black Dao), and the Dong Gong (董公) per-purpose rules. We compute these directly from astronomical solar terms — no app shortcuts.

Does the timing of ROM matter as much as a wedding ceremony?

Energetically yes — the registration is the legal-binding moment, and the day-pillar element it sits on travels with the marriage record. Practically the rule set is slightly looser than a full banquet (no need for 喜慶 stars), but month-break and year-break disqualifiers still apply absolutely.

Methodology

Pillars use the 60 Jiazi day cycle anchored to the published Tong Shu. The BaZi year flips at Li Chun, the BaZi month flips at each sectional solar term — both computed from VSOP87 ephemeris data. The Twelve Officers (建除) and the 28 Mansions each have their own deterministic rotation against an authoritative anchor.

Weights come from the Dong Gong (董公擇日) school. Auspicious 神煞 add, taboo 神煞 subtract, the officer and mansion adjust, Yellow Dao adds a small bonus on top. Sum, clamp to 0–100, classify. No app shortcuts.