National Black Cat Day is observed in the United Kingdom on October 27 each year. Established in 2011 by Cats Protection, the UK's largest feline welfare charity, this day aims to challenge negative stereotypes surrounding black cats, which have historically been associated with bad luck and witchcraft. The initiative encourages the adoption of black cats from shelters, as they are often overlooked compared to cats of other colors. Statistics show that black and black-and-white cats typically take longer to find homes, but the campaign has helped improve their adoption rates. People celebrate this day by adopting black cats, donating to or volunteering at shelters, and sharing photos of their black cats on social media using hashtags like #NationalBlackCatDay. Other countries also recognize similar celebrations, such as National Black Cat Appreciation Day in the United States on August 17.