National Card Day is celebrated annually on the first Saturday in October. This day encourages people to connect with friends and family by sending greeting cards, postcards, or other types of cards. It highlights the joy of receiving and giving cards, which can express love, gratitude, or encouragement. The celebration promotes creativity and personal expression through card-making. Many people participate by crafting their own cards or selecting special ones from stores. National Card Day serves as a reminder of the importance of maintaining relationships and spreading kindness through simple gestures like sending a card.