Credits

Historical on-this-day content (events, births, deaths) is derived from the English Wikipedia via the Wikimedia REST API, licensed under Creative Commons Attribution-ShareAlike 4.0. Text has been trimmed for length; no modifications beyond trimming have been made to individual entries. Any downstream reuse of the on-this-day content retains the CC BY-SA 4.0 license.

Word-of-the-day definitions, parts of speech, and example sentences are sourced from the Free Dictionary API, which derives its content from the English Wiktionary under CC BY-SA 3.0. The seed list of vocabulary words was hand-curated for difficulty mix; only definitions and examples are reused, and reuse retains the CC BY-SA 3.0 license.

WhatDayIsIt · All other content © WhatDayIsIt.