National Call a Friend Day is observed worldwide every December 28. This unofficial holiday encourages people to reach out to friends they haven't spoken to in a while, promoting the benefits of voice communication over messaging. Although the origins of the holiday are unclear, it is celebrated at a time when many people are busy with year-end activities, making it a perfect opportunity to connect and share pleasant experiences. Psychological organizations and therapists support this observance, highlighting the positive impact of talking to friends on mental health. Typical customs include making phone calls or video chats, organizing group calls, and even initiating a "pay it forward" approach by encouraging friends to call others. Participants are also encouraged to share their experiences on social media using the hashtags #NationalCallAFriendDay and #CallAFriendDay.