May 21

Overview and seasonal context

In many temperate regions May 21 is associated with fully emerged foliage, warming temperatures and flowering plants. It is outside the range of the main equinoxes and solstices but commonly marks an active period for agriculture, gardening and outdoor festivals in the Northern Hemisphere. In the Southern Hemisphere the date corresponds to the approach of winter and shorter daylight hours.

Notable historical events

• May 21, 1856 — The attack known as the Sacking of Lawrence occurred during the violent pre–Civil War confrontations in Kansas, an episode of the so-called "Bleeding Kansas" period.
• May 21, 1927 — Charles Lindbergh completed the first solo nonstop transatlantic flight when his plane landed at Le Bourget Field near Paris after departing New York the previous day.
• May 21, 2011 — An often-cited modern cultural event: a high-profile prediction that the world would experience a rapture or divine judgment on this date drew global media attention when the predicted event did not occur.

Observances and international days

• World Day for Cultural Diversity for Dialogue and Development — designated by UNESCO to promote cultural diversity and intercultural dialogue.
• International Tea Day — recognized by the United Nations and observed to highlight the importance of tea producers and the role of tea in many cultures.

Notable births and cultural notes

• Albrecht Dürer (born May 21, 1471) — influential German painter, printmaker and theorist of the Renaissance.
• Henri Rousseau (born May 21, 1844) — French post-impressionist painter known for his imaginative jungle scenes.

May 21 appears in calendars worldwide as a normal civil date but accumulates layered local meanings through festivals, historical commemorations and seasonal activities. When consulting historical lists, the importance of particular events on this date depends on regional perspective and the kinds of anniversaries local communities elect to remember.