On this Thursday, September 18, 2025, the moon is in its waning phase, with only 14% visibility, approaching the new moon scheduled for the 21st. This moment in the lunar cycle, known for its introspective energy, influences everything from agricultural activities to personal decisions, promoting reflection and the closure of cycles. In Florianópolis, where sky observation is a habit for many, the waning moon offers a visual and symbolic spectacle. Below, we explore the details of this phase and the complete lunar calendar for September.
The lunar cycle, lasting an average of 29.5 days, captivates due to its regularity and impact on various aspects of life. The waning moon, in particular, is seen as a period of retreat, ideal for completing projects or letting go of unnecessary habits. In September 2025, the lunar calendar highlights key moments to plan practical and spiritual activities. Today’s waning moon, for instance, invites organization and detachment, according to cultural traditions.
For farmers and fishermen, the current lunar phase has direct implications. The moon’s gravitational influence, though milder in the waning phase, still affects tides, reducing the amplitude of high tides. In agriculture, this period is recommended for harvesting roots and pruning, practices that leverage the declining energy of the celestial body.
- Main influences of the waning moon:
- Reflection and introspection for personal decisions.
- Harvesting roots and pest control in agriculture.
- Reduced tidal amplitude, impacting navigation.
- Completion of projects and resolution of pending tasks.
Influences of the waning moon on daily life
The waning moon, with its gradually diminishing light, is associated with a time of introspection. Many people use this phase to reflect on goals, review plans, and close cycles that no longer make sense. Emotionally, the waning moon’s energy encourages detachment, helping to release feelings or situations that hinder progress. This makes it an ideal period for cleanups, whether physical, like organizing the home, or emotional, such as resolving internal conflicts.
In navigation, the waning moon’s influence is noticed in less intense tides. Fishermen in coastal regions, like the Santa Catarina coast, adjust their activities due to the smaller tidal variation, which can facilitate certain fishing practices. The phase is also used by navigators to plan safer routes, taking advantage of calmer waters.
In agriculture, the waning moon is valued for its influence on the soil. Experienced farmers know this is the ideal time to harvest tubers, such as potatoes and carrots, as the plant’s energy concentrates in the roots. Additionally, pruning trees and controlling pests are more effective, as plant sap circulates with less intensity, reducing stress on crops.
- Recommended activities during the waning moon:
- Harvesting roots and tubers for better quality.
- Pruning trees and shrubs to promote healthy growth.
- Personal reflection for planning changes.
- Organizing spaces and resolving pending tasks.
September 2025 lunar calendar
The month of September 2025 features a complete lunar cycle, with specific dates for each phase, allowing different sectors to plan their activities. The waning moon, observed today, September 18, gives way to the new moon on September 21 at 4:54 PM, marking the start of a new cycle. Earlier this month, the full moon occurred on September 7, and the crescent moon will appear on September 29.
Each lunar phase has unique characteristics. The new moon, for example, is ideal for starting projects, while the full moon, with its total illumination, is associated with celebrations and culminations. The crescent moon encourages growth and expansion, perfect for developing ideas launched in the previous phase. The waning moon, in turn, closes the cycle with an invitation to introspection and preparation for new beginnings.
- September 2025 lunar calendar dates:
- Full moon: September 7, at 3:08 PM.
- Waning moon: September 14, at 7:32 AM.
- New moon: September 21, at 4:54 PM.
- Crescent moon: September 29, at 8:53 PM.
Curiosities about the lunar cycle
The lunar cycle is not only an astronomical phenomenon but also a source of inspiration for myths and traditions. In various cultures, the moon is associated with cycles of renewal and fertility. In Greek mythology, for instance, the goddess Artemis was considered the personification of the moon, symbolizing protection and transformation. In popular folklore, the full moon is often linked to tales of werewolves and supernatural events.
The moon’s appearance varies by hemisphere. In the Southern Hemisphere, like Brazil, the illuminated part of the crescent moon appears on the left, while in the Northern Hemisphere, it is on the right. This difference, according to NASA, occurs due to the observation perspective relative to the lunar orbit. Additionally, the average distance from the moon to Earth, about 384,400 kilometers, varies throughout the cycle, influencing phenomena like tides and even the moon’s visual perception.
- Curious facts about the moon:
- The lunar orbit lasts approximately 29.5 days.
- The full moon is associated with transformation myths in various cultures.
- The moon’s distance from Earth varies between 356,500 km (perigee) and 406,700 km (apogee).
- In the Southern Hemisphere, the crescent moon’s illumination is on the left.
Practical impacts of lunar phases
Lunar phases influence practical activities in various sectors. In agriculture, the lunar calendar is followed by many farmers to optimize planting and harvesting. During the waning moon, for instance, the descending energy favors weed removal, as plant growth slows. This practice, common in agricultural regions of Brazil, such as rural Santa Catarina, helps maintain soil health.
In fishing, the waning moon reduces tidal strength, which can facilitate catching certain species that approach the coast in calmer waters. Navigators also consider these conditions to plan trips, especially in areas with strong ocean currents. Additionally, the waning moon is used in cultural practices, such as energy cleansing rituals, common in communities that value spiritual traditions.
- Sectors impacted by the waning moon:
- Agriculture: ideal for harvesting roots and pruning.
- Fishing: less intense tides facilitate certain catches.
- Navigation: greater stability for maritime routes.
- Spiritual practices: a time for introspection and renewal.
Traditions and symbolism of the moon
The moon has always held a central place in human traditions. In Brazil’s indigenous communities, such as the Guarani, the moon is seen as a guide for planting and harvesting, with each phase linked to different activities. The waning moon, for example, is considered a period of purification, ideal for rituals seeking balance.
In astrology, the waning moon is associated with introspection and cycle closure. Many astrologers recommend using this phase for meditation, planning changes, or ending stalled projects. While science does not confirm all the influences attributed to the moon, the cultural and psychological impact of these beliefs is undeniable, shaping practices in various regions of the world.
- Traditions linked to the waning moon:
- Purification rituals in indigenous communities.
- Meditation and planning in astrological practices.
- Cycle closure in spiritual traditions.
- Harvesting and pruning in traditional agricultural cultures.