Full-text search across every dated entry in the historical record, plus the subjects that match. Each entry is a sentence quoted verbatim from a numbered English Wikipedia revision and carries that revision id, so an answer built on it can cite a source that will still say the same thing next year. Use this whenever you need a dated fact.
輸入參數limitquery必填to_yearfrom_year
Everything the record holds for one year: the headline summary and every dated entry, grouped by subject, each with its source revision.
輸入參數year必填
One calendar day across every recorded year — what happened on 4 July in all of them. This aggregate exists in no single encyclopedia article.
輸入參數date必填
One subject's whole record in date order: every dated entry across all years in which Wikipedia's editors linked to it, with its Wikidata id for joining to other datasets.
輸入參數limitsubject必填to_yearfrom_year
One country's dated record, century by century, harvested from the per-country year articles English Wikipedia writes separately ('1969 in Japan') and never indexes together. Use this when the question is about a nation rather than a year or a subject.
輸入參數limitcountry必填to_yearfrom_year
What a year (1800-2025) looked like in numbers, from outside sources rather than encyclopedia prose: world population, U.S. CPI and what a dollar then is worth now, average U.S. prices (gas, eggs, bread, milk, houses, income, minimum wage), who led the major powers, and the Billboard Hot 100 No. 1 songs. Every figure carries its source. For any other country's leaders use get_leaders.
輸入參數year必填
Who led a country (or every country) in a year, 1800-2025: heads of state, heads of government and ruling-party leaders, in the order they held the post. Each name is quoted from Wikipedia's list of state leaders (revision id given) and kept only where the person's Wikidata record holds the same post over the same years, so a missing name means the sources disagree, not that the post was empty.
輸入參數year必填country
The Billboard Hot 100 No. 1 single on a given date (1958-08-04 onward): the first chart issue dated on or after that day, quoted from a cited Wikipedia revision.
輸入參數date必填
Inflation-adjust U.S. dollars between years with the BLS CPI-U (1913 onward). Omit to_year for the latest published month.
輸入參數amount必填to_yearfrom_year必填
Browse the countries that have a record of their own, largest first.
輸入參數limit
Browse the subjects that have a timeline, largest record first.
輸入參數limitstarts_with