Introduction
As we approach the phenomenon marking the end of summer and the beginning of autumn in most parts of the planet, the Autumn Equinox of 2025 is fast approaching. This event will take place on Monday, September 22nd, signaling the end of summer and the official start of autumn in the Northern Hemisphere.
Cultural Significance
Globally, cultural and contemplative activities are organized due to the profound significance of the equinox in Mesoamerican traditions. Sites like Teotihuacán and the Cuicuilco archaeological zone attract visitors who celebrate the balance between light and darkness.
Duration
Exact Time: In Mexico, the phenomenon will occur at 12:19 PM (Central Time), according to reports from the Astronomical Observatory and the National Autonomous University of Mexico (UNAM). The precise time in Central Time will be 18:19 UTC.
- Autumn Length: Autumn will last approximately 89 days and 21 hours, concluding on December 21st, 2025, with the arrival of the Winter Solstice.
- Observational Highlights:
- Bosque de Chapultepec
- Parque Nacional Desierto de los Leones
- Ajusco
During this period, we can enjoy cooler temperatures, earlier sunsets, and clear skies in various astronomical observation points.
What is the Equinox?
The sun’s rays fall perpendicularly on Earth’s equator, nearly equally distributing light and darkness across the planet. This balance between day and night, known as “equinox,” originates from the Latin term aequinoctium, meaning “equal night.”
The equinox also has an inclination that causes the sun to move north during summer, reaching its highest point in the June Solstice. It then descends southward and crosses the equator during the September Equinox.
At this point, there is a seasonal change in the Northern Hemisphere, transitioning from summer to autumn. Simultaneously, in the Southern Hemisphere, spring begins.
Key Questions and Answers
- What is the Autumn Equinox? The Autumn Equinox marks the transition from summer to autumn in the Northern Hemisphere and spring to summer in the Southern Hemisphere. It occurs when the sun is directly above Earth’s equator, resulting in near-equal day and night lengths worldwide.
- When does the Autumn Equinox 2025 occur? The Autumn Equinox of 2025 will take place on Monday, September 22nd.
- What time is the Equinox in Mexico? In Mexico, the equinox will occur at 12:19 PM Central Time (18:19 UTC).
- How long does Autumn last? Autumn 2025 will last approximately 89 days and 21 hours, ending with the Winter Solstice on December 21st, 2025.
