Feast
In Scripture a feast — Hebrew chag — is a designated period, not a single day but a span with its own structure and sequence. The Feast of Weeks spans seven weeks; the Feast of Tabernacles, seven days. A feast may contain one or more annual holy days, but the feast itself is the full period, not any single day within it.
A feast is not the same as a holy day (a sabbath), though the two connect and can coincide — the Feast of Trumpets is itself a holy day, and Atonement is both a feast and a holy day.
Synonyms: festival, appointed time, moed.