22 December 2021

• 356th day of the year. There were then 9 days left in 2021.
• 51st Wednesday of 2021.
• on the 51st week of 2021 (using ISO standard week number calculation).
• 2nd day of Winter. There were 88 days left till Spring.
• Birthstone for this day: Turquoise & Blue Topaz

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

• National Mathematics Day - India
• Summer Solstice - New Zealand