During rosh hashanah, a jewish person would most likely

They would probably live their days normally since most countries are secular. They would go to work but they would be able to celebrate after if they wanted, usually making traditional Jewish food and reading parts of the Torah that are considered appropriate for the event. The Rosh Hashanah is basically like a new year for Jewish people but it's not an official new year of countries where they live.

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Independent executive agencies are more specialised.