時支 · twelve branches across one civil day
Secret animal calculator
Match a local birth time to its Chinese zodiac double-hour branch. Add the birth date when you want the moving Heavenly Stem and the complete hour pillar rather than the animal label alone.
Clock time → branch · date + time → pillar
Choose the depth of the answer
Time alone is enough for the secret animal. A date unlocks the Day Master rule that derives the hour stem.
Your double hour opens here
Enter the local clock time to identify its two-hour branch and secret animal.
Two calculations, kept separate
The clock fixes the branch; the day fixes the stem
That is why “born at 3am” can answer Tiger hour, but cannot name the complete hour pillar without the calendar date.
- 01
Offset from Rat
Add one hour, divide the 24-hour clock into twelve two-hour blocks, and wrap after Pig.
- 02
Read the Day Master
With a date, calculate the day stem under the declared late-Rat boundary convention.
- 03
Apply Five Rats
The day-stem group plus the hour-branch position selects one of ten possible hour stems.
Twelve periods · twelve rich hour records
Every secret animal in one day
Each canonical hour page includes its clock edges, branch coordinates, five possible stems and linked month and direction records.
- 01子 Rat hour
23:00–00:59 · Zi branch · fixed Water
Full hour record → - 02丑 Ox hour
01:00–02:59 · Chou branch · fixed Earth
Full hour record → - 03寅 Tiger hour
03:00–04:59 · Yin branch · fixed Wood
Full hour record → - 04卯 Rabbit hour
05:00–06:59 · Mao branch · fixed Wood
Full hour record → - 05辰 Dragon hour
07:00–08:59 · Chen branch · fixed Earth
Full hour record → - 06巳 Snake hour
09:00–10:59 · Si branch · fixed Fire
Full hour record → - 07午 Horse hour
11:00–12:59 · Wu branch · fixed Fire
Full hour record → - 08未 Goat hour
13:00–14:59 · Wei branch · fixed Earth
Full hour record → - 09申 Monkey hour
15:00–16:59 · Shen branch · fixed Metal
Full hour record → - 10酉 Rooster hour
17:00–18:59 · You branch · fixed Metal
Full hour record → - 11戌 Dog hour
19:00–20:59 · Xu branch · fixed Earth
Full hour record → - 12亥 Pig hour
21:00–22:59 · Hai branch · fixed Water
Full hour record →