World Sleep Day is an international campaign to raise public awareness of sleep health. Since 2008, the WSD campaign has grown from a small group of advocates to include hundreds of volunteer organizers in over 70 countries. A historical database of 2047 World Sleep Day (WSD) awareness activities recorded over 16 years was examined to characterize the growth of WSD and to delineate areas for further development. Between 2014 and 2024, WSD activity grew in Europe from 24 to 132 activities and in Asia from 10 to 94
however, WSD activity grew in Africa from one to 20 activities and Oceania from five to 18. Growth has been considerable, yet organizing and outreach work needs to accelerate in Africa and Asia to further advance the purpose of WSD.