National Crime Junkie Day is observed worldwide every December 18, celebrating true crime enthusiasts and the community surrounding the popular podcast, Crime Junkie. Launched in 2022 to mark the fifth anniversary of the podcast, this unofficial holiday encourages fans to engage with the true crime genre through various activities. Participants often listen to their favorite true crime podcasts, read true crime literature, watch documentaries, and discover new content within the genre. Additionally, individuals are encouraged to donate to organizations that assist in solving cold cases and locating missing persons. The day highlights the role of true crime enthusiasts in supporting investigations and advocating for victims and their families, fostering a sense of community among listeners. The hashtag #NationalCrimeJunkieDay is commonly used on social media to promote the celebration.