In festivals, the days in Beijing are longer than the nights.

In Beijing, the days are longer than the nights are New Year's Day and Spring Festival.

Because the summer solstice is the longest day and the shortest night among the 24 solar terms of the lunar calendar. After the summer solstice, the days get shorter, the nights get longer, and the autumnal equinox is as long as day and night. After the autumnal equinox, the days get shorter and the nights get longer. On the solstice in winter, the days are the shortest and the nights are the longest. Then the days get longer and the nights get shorter and shorter. At the vernal equinox, day and night are the same length, and then it becomes the summer solstice.

New Year's Day and Spring Festival are both after the autumnal equinox and before the vernal equinox.