Autumn Has Arrived in Hanoi - Let's Learn About the 6 Solar Terms of Autumn

1. Beginning of Autumn (Lập Thu)

The Beginning of Autumn solar term usually falls on August 8 or August 9 in the solar calendar each year. The Sun is at longitude 135°.

This marks the start of autumn, when temperatures and sunlight gradually decrease, chrysanthemums begin to bloom, and the weather starts feeling chilly.

2. End of Heat (Xử Thử)

The End of Heat solar term usually falls on August 23 or August 24 in the solar calendar each year. The Sun is at longitude 150°.

The hot spells of summer begin to subside. It is a turning point where temperatures drop, making the climate cool and refreshing.

3. White Dew (Bạch Lộ)

The White Dew solar term usually falls on September 8 or September 9 in the solar calendar each year. The Sun is at longitude 165°.

White Dew means light sunlight. At this time, the weather turns noticeably cool, nights are chilly, dew begins to fall, and in the early morning, moisture and dew drops can be seen on the grass.

4. Autumnal Equinox (Thu Phân)

The Autumnal Equinox solar term usually falls on September 23 or September 24 in the solar calendar each year. The Sun is at longitude 180°.

This marks the midpoint of autumn. The amount of sunlight and temperature continue to decrease, and leaves on some trees turn yellow and fall.

5. Cold Dew (Hàn Lộ)

The Cold Dew solar term usually falls on October 8 or October 9 in the solar calendar each year. The Sun is at longitude 195°.

Cold Dew means cool weather. During this period, the Southern Hemisphere tilts completely toward the Sun, while the Northern Hemisphere receives the least heat and sunlight.

6. Frost Descent (Sương Giáng)

The Frost Descent solar term usually falls on October 23 or October 24 in the solar calendar each year. The Sun is at longitude 210°.

The weather turns distinctly cold, with heavy dew at night—hence called Frost Descent—and frost may begin to appear, damaging plants.