Major Cold — Born Hour
Major Cold is the last Zhong Qi before the wheel returns to Li Chun.
Overview
Da Han (大寒) at 300° is Chou month's Zhong Qi and the close of the twenty-four-term wheel; 15° later is Li Chun again.
Pentads: 鸡始乳、征鸟厉疾、水泽腹坚. Extreme cold imagery matches Chou earth storing winter water.
Customs: 除尘 (year-end cleaning), buying 年货, 打牙祭 in old merchant calendars.
The cycle's end is also its restart — Year Pillar logic returns at the next Jie (Li Chun).
Phenology (three pentads)
Three pentads: hens brood; fierce birds hunt hard; ice thickens.
Classical citation
Classical: cold reaches its reverse extreme — Major Cold.
Month command contrast
Month command: Chou mid-point; wheel returns to Li Chun.
Related entries
How to read it on a chart
Find Major Cold 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
Major Cold is a calendrical node and cultural festival, not a weather guarantee or personal luck verdict.