January 21

Characteristics and seasonal context

The date typically occurs during the coldest part of the year across much of the Northern Hemisphere, which influences seasonal events and outdoor observances. In meteorology and popular culture it is sometimes referenced when discussing winter weather patterns, holiday aftereffects, or the progress of the new year.

Notable historical events

• 1793: King Louis XVI of France was executed during the French Revolution, a turning point in European history.
• 1924: The death of Vladimir Lenin precipitated a struggle for succession that shaped Soviet politics for decades.
• 1976: The Anglo-French supersonic airliner Concorde entered commercial service, marking a milestone in civil aviation.
• 2013–2017: When January 20 falls on a Sunday, the public inauguration ceremony for a U.S. president is often held on January 21; the public swearing-in for a second term of one modern president occurred on this date.
• 2017: Large-scale global demonstrations and the first Women's March took place on this date in many cities, reflecting contemporary political movements.

Births, deaths and observances

January 21 has been the birth or death date of many notable figures across politics, arts and science. It is also the traditional feast day of Saint Agnes in some Christian liturgical calendars. In popular culture, January 21 is observed as National Hugging Day in some countries, a lighthearted observance intended to encourage affection and human contact.

Significance and distinctions

Beyond individual events, January 21 serves as an early-year reference point. It is often used in annual planning, fiscal calendars, and seasonal reporting. When ceremonial dates fall a day later than the legal date for practical reasons—such as a Sunday—January 21 can gain temporary prominence as the day of public observance.

For further chronological context, consult resources on the Gregorian calendar or on how leap years affect day counts and seasonal alignment.