4 December 2027

• 338th day of the year. There are then 27 days left in 2027.
• 49th Saturday of 2027.
• on the 48th week of 2027 (using ISO standard week number calculation).
• Birthstone for this day: Turquoise & Blue Topaz

There are no major holidays or observances in Australia for this date.

• Saint Barbara's Day (Barbaratag) - Popular in: Germany, Venezuela
• National Cookie Day - Popular in: United States, United Kingdom, Canada
• Miner's Day (Dzień Górnika) - Poland
• Indian Navy Day - India