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22 September: what is celebrated today
22 September is no ordinary date. It marks the start of autumn in the northern hemisphere and, with it, an invitation to stop, observe and reflect. That day, the calendar reminds us that we are part of a universe in constant motion and, at the same time, encourages us to care for our environment, protect endangered species, make room for art and acknowledge little-known diseases.
Autumn Equinox
The equinox, from the Latin aequinoctium, meaning equal night, marks the moment when day and night are the same length. In 2025, it will arrive on 22 September in the Northern Hemisphere and on 20 March in the Southern Hemisphere.
This phenomenon occurs because the Sun aligns with Earth’s equator, distributing its light evenly. It is a natural reminder that everything in life seeks balance.
World Car Free Day
Since 2000, the European Commission has made this date a global call to leave the car parked and choose sustainable alternatives: walk, cycle or take public transport.
The idea was born in the 1970s during the oil crisis and is more relevant than ever in the face of climate change. Sometimes a small action — such as not using the car for a day — can have a major impact.
World Rhino Day
The rhinoceros, that thick-skinned giant with its imposing horn, connects us to prehistory. Five species now survive, mainly in Africa and Asia, but all are threatened by poaching and habitat loss.
This day seeks to raise awareness of the urgency of protecting them, not only for their sake but for the balance of the ecosystems they help maintain.
International Mime Day
The art of silence has its day too. It is celebrated every 22 September in honour of Marcel Marceau, master of gesture and expression. Thanks to the drive of mime artist Jean Bernard Laclotte, this observance brings together artists from many countries who keep alive an art capable of moving people without speaking a single word.
World Narcolepsy Day
This neurological sleep disorder affects thousands of people worldwide. Caused by a lack of hypocretin, it disrupts waking and sleeping cycles, causing excessive sleepiness, cataplexy and other difficulties.
The aim of the day is to make narcolepsy visible, support patients and their families, and encourage research to improve their quality of life.
22 September reminds us that the world turns on delicate balances: light and darkness, mobility and the environment, biodiversity and art, and invisible health. It is a perfect date to become aware and to celebrate life in all its forms.