Qixi Festival falls on the seventh day of the seventh lunar month, so its date on the Gregorian calendar varies from year to year.

Qixi Festival is one of the traditional Chinese festivals, held on the seventh day of the seventh lunar month each year, which is why it is also popularly called Double Seventh. Because the lunar and Gregorian calendars differ, the Gregorian date corresponding to Qixi is not fixed from year to year; it usually falls between July and August on the Gregorian calendar, and the exact day must be checked against that year's calendar.

The origin of Qixi Festival is closely tied to the legend of the Cowherd and the Weaver Girl. Legend has it that the Weaver Girl was a celestial fairy who married the mortal Cowherd, but the two were forced to be separated on opposite banks of the Milky Way, meeting only once a year on the seventh day of the seventh lunar month. The story of magpies forming a bridge to help them has been passed down for a thousand years, making this day a festival symbolizing faithful love, and today it is often regarded as the Chinese-style Valentine's Day.

In traditional customs, Qixi is also known as the Festival of Seeking Skills and the Daughters' Festival. In the old days, women would thread needles and pay homage to the Weaver Girl on this day to pray for dexterous hands and a clever mind; in some places there were also customs such as eating qiaoguo (skill fruits), airing books and clothes, and stargazing while making wishes. These activities were mostly related to agricultural seasonal nodes, handicraft skills, and everyday life of food and clothing, reflecting the life wisdom of an agrarian society.

Today, the ways of celebrating Qixi are more varied and rich. People often gather with family on this day and express their feelings to loved ones, and many places also hold folk markets, stargazing and moon-viewing events and other seasonal activities. Understanding the exact date and cultural connotations of Qixi Festival helps people better appreciate the charm of traditional seasonal culture.