Winter Solstice — Born Hour
Winter Solstice: longest night at 270° — major festival and Zi-month depth.
Overview
Dong Zhi (冬至) is the winter solstice Zhong Qi of Zi month. Northern daylight is shortest; yang is said to be born within yin.
Pentads: 蚯蚓结、麋角解、水泉动. Imperial and family calendars treated this as a high festival (冬至大如年).
Customs: dumplings in the north, tangyuan in the south, 九九消寒图 (counting-nines winter drawing).
Near the solstice instant, re-check true solar time for Hour Pillar accuracy.
Phenology (three pentads)
Three pentads: worms coil; deer shed; springs stir.
Classical citation
Classical: sun reaches the south — shortest day.
Month command contrast
Month command: Zi mid-point; yin extreme, yang is born.
Related entries
How to read it on a chart
Find Winter Solstice in the almanac or chart engine output for your birth year and compare the instant with true solar time.
Jie nodes can move the Month Pillar; Zhong Qi deepen the same month without switching branch.
Limits
Winter Solstice is a calendrical node and cultural festival, not a weather guarantee or personal luck verdict.