National Call-in Single Day is observed on February 14th and celebrates single life as a fulfilling and independent lifestyle. Founded by Yahoo! Personals, the day encourages individuals who are not in romantic relationships to recognize the benefits of their status and invest in personal well-being. Typical customs include pampering oneself, engaging in solo adventures, cooking special meals, and hosting gatherings with friends to foster connection. The day promotes self-improvement and reflection, allowing individuals to focus on personal growth and happiness without the pressure of romantic expectations. It serves as a reminder that one's worth is not defined by relationship status, and it highlights the value of friendships and community.