Which solar term has the shortest daylight time in the northern hemisphere?

When the winter solstice solar term comes, the daylight time in the northern hemisphere is the shortest.

Because the earth rotates around its axis, but this axis is not perpendicular to the ecliptic plane, and the included angle is 90 degrees -23 degrees and 26 minutes. This determines that when the earth rotates, the sun cannot shine on the same latitude of the earth all the year round.

At the vernal equinox (3.2 1), the sun shines directly on the equator, and there are as many days and nights on this day. From the summer solstice (6.22), the sun shines directly on the Tropic of Cancer. On this day, the days in the northern hemisphere are long and the nights are short. It is extremely day in the Arctic Circle and extremely night in the Antarctic Circle. The autumnal equinox and the vernal equinox are the same. In winter solstice (12.22), the sun shines directly on the tropic of Capricorn, and the days in the northern hemisphere are short and the nights are long, with polar nights in the Arctic Circle and polar days in the Antarctic Circle.