大雪 · Major Snow: The Solar Term That Starts the Deep Winter Month

A December checkpoint on the solar path

If you look out your window during the first week of December and see wet pavement, dry desert scrub, or full southern-hemisphere sunshine, a calendar entry called Major Snow can feel comically out of place. The name translates the Chinese term 大雪, one of the twenty-four traditional solar terms spaced at fifteen-degree intervals along the Sun’s apparent annual path.

While the naming system carries an agricultural and cultural history shaped by northern seasons, the calendar itself tracks solar longitude rather than your local barometer. It usually arrives in early December, though the exact date and clock time shift slightly depending on the year and your time zone.

Where Major Snow sits in a BaZi chart

In BaZi—the system of four pillars and eight characters—months do not flip on the first day of the civil calendar. Instead, alternating solar terms mark the boundaries between solar months, while the remaining terms sit at the midpoints. Major Snow is one of those boundary markers, opening the deep winter month just before the Winter Solstice arrives as the midpoint.

If someone is born in early December, a few hours before or after the exact instant of Major Snow can change their month pillar—one of the four pairs of Heavenly Stems and Earthly Branches that surround their Day Master. You never need to guess where a December birthday lands by reading an approximate calendar; when you generate a free basic chart here, the calendrical engine checks the solar term transition using local civil time.

An exercise for an unhurried ten minutes

Because a solar term is an astronomical checkpoint rather than a mood prescription, you can use it as a simple prompt to observe what is actually happening around you. For this stretch of the year, try a contemporary exercise: return to a stalled question with fresh patience.

Imagine someone named Maya staring at a half-finished portfolio site she abandoned in October. Instead of forcing a whole weekend overhaul, she takes ten quiet minutes on the day of Major Snow to look at the draft without judgment. She writes down three concrete details: the font feels cramped, the bio is two years old, and the afternoon light hits her desk at four o’clock. She sketches one tiny fix and closes the laptop.

You can try the same thing with an unfinished book, a neglected plant, or the view from your kitchen window. What happens if December is actually the busiest, loudest month of your year, and quiet patience feels impossible? Notice that friction, jot down a single honest sentence about the pace of your week, and check back at the next solar term to see what shifted.