Can you kill a cow on August 15th?

Cows can be killed.

According to the traditional Chinese lunar calendar, August 15th is the Mid-Autumn Festival, which is also one of the important traditional festivals in China. In some places, people will choose to slaughter livestock, such as cattle and sheep, on this day to provide food for families or communities to hold Mid-Autumn Festival activities. This practice originated from the custom of ancient farming societies, which believed that slaughtering livestock during the harvest season could pray for a good harvest and blessings. In modern society, there are certain laws and regulations for the slaughter of livestock, which must be carried out in legal slaughterhouses and comply with hygiene and food safety standards. When slaughtering cattle, relevant laws and regulations should be followed, and the slaughtering process should meet hygienic requirements to ensure food safety and public health.