National Indexing Day (#IndexDay), inaugurated in 2017 to celebrate the foundation of the Society of Indexers and promote the profession of indexing, was marked in 2025 with in-person publisher workshops and social-media activity. After briefly setting out the background to National Indexing Day (NID), this article gives a flavour of how NID 2025 helped to raise the profile of indexing and indexers.
Izzard et al. (Tue,) studied this question.