ISO date format
Also written: YYYY-MM-DD, ISO format
The date format year-month-day with zero-padded numbers, like 2026-11-02. Sam's answers use it, and a date such as "2026-11-2" counts as an error.
Also written: YYYY-MM-DD, ISO format
The date format year-month-day with zero-padded numbers, like 2026-11-02. Sam's answers use it, and a date such as "2026-11-2" counts as an error.