Observation of the night sky reveals that the moon, in its constant journey around Terra, presents a different face at each period. Nesta Thursday, March 12, 2026, the natural satellite is in the waning phase, with approximately 43% of its surface visible and in progressive decline in luminosity, according to data from Instituto Nacional of Meteorologia (Inmet).
This stage marks an important transitional moment in the lunar cycle, preceding the arrival of a new phase. Faltam just six days to Lua Nova, which will restart a new period of observation and influence on the astronomical and cultural calendar.
For sky enthusiasts and those curious about the sky, it is an opportunity to follow the gradual change, which will culminate in the absence of visibility of the moon, preparing for the new cycle to come. Understanding these phases is fundamental for various activities, from agriculture to navigation.
Lunar calendar for March 2026
The month of March 2026 features a dynamic lunar calendar, beginning with the intensity of Lua Cheia and progressing through all of its major phases. The changes are precise and follow a well-established astronomical pattern, allowing detailed predictions for observers and planners.
The cycle in March began with Lua Cheia on the 3rd, around 8:39 am, completely lighting up the sky. Then, the transition to Lua Minguante occurred on the 11th, at 6:41 am, signaling the decrease in the satellite’s visible light.
The expectation is for Lua Nova, which will appear at 10:16 pm on the 18th, marking the beginning of a new cycle. Encerrando the main phases of the month, Lua Crescente will make its appearance on the 25th, at 4:19 pm, promising a growing band of light in the sky.
The lunation cycle and its nuances
The lunation, or complete lunar cycle, covers the period between two consecutive Luas Novas, with an average duration of 29.5 days. Durante this interval, Lua goes through its four main phases, each of which lasts approximately seven days, dictating the appearance of the satellite in the sky.
In addition to the main phases — Nova, Crescente, Cheia and Minguante — there are also so-called “interphases”. Entre to Lua Nova and Cheia, we can observe the
Between Lua Cheia and Minguante, the gibbous gibbous and the Quarto Minguante appear. Essas detailed transitions highlight the complexity and beauty of lunar movement, which has been studied and revered by civilizations throughout history.
Understanding each lunar phase in detail
Each phase of Lua has distinct characteristics and is perceived in a particular way from Terra, reflecting different positions in its orbit in relation to Sol and our planet. Essas phases not only shape the nighttime landscape, but also influence tides and, according to some beliefs, aspects of terrestrial life.
Moon Nova
In the Lua Nova phase, the satellite is positioned directly between Terra and Sol. Essa configuration causes the side of Lua illuminated by Sol to face the star completely, while the dark side faces Terra. Consequentemente, Lua is not visible in the night sky, marking the beginning of a new lunar cycle and is often associated with new beginnings and new opportunities.
Moon Crescente
After Lua Nova, phase Crescente begins. Gradualmente, a thin illuminated patch begins to appear in the sky, expanding each night. Inicialmente, only a subtle arc of light is observed, which widens until half of the lunar disk is visible, a moment known as Quarto Crescente. Esta phase is symbolic of growth, development and the construction of new paths, representing the expansion of energies and projects.
Moon Cheia
Lua Cheia occurs when Terra is positioned between Sol and Lua. Essa alignment allows the lunar face facing us to be fully illuminated, making it completely visible and resplendent in the night sky. Este is the peak of luminous intensity, with Lua rising on the horizon exactly at the moment Sol sets. Lua Cheia is traditionally linked to plenitude, the culmination of processes and the manifestation of energies at their maximum point.
Moon Minguante
After Lua Cheia, lunar luminosity begins to progressively decline. Each night, a smaller portion of its surface remains illuminated. Quando only half of the disk is visible, Quarto Minguante is reached, the opposite of Quarto Crescente. The Lua continues to lose light until it returns to the Nova phase, closing the cycle. Phase Minguante evokes reflection, completion of stages and preparation for new beginnings, a period of introspection before rebirth.
Impact of lunar phases and observation
Understanding lunar phases goes beyond mere astronomical curiosity, extending to diverse practical and cultural applications. The phases directly influence ocean tides, with Luas Nova and Cheia being responsible for spring tides, with greater amplitudes.
Furthermore, many cultures and agricultural traditions still rely on the lunar calendar for planting and harvesting, believing in the influence of Lua on plant growth. Observing the phases is also crucial for navigation and for carrying out festivals and rituals that follow the rhythm of the natural satellite.
For astronomy lovers, following the transition between phases is a continuous and accessible spectacle. Equipamentos as simple as binoculars or even the naked eye can provide a rewarding experience of connecting with the cosmos, allowing you to observe craters and changes in lighting on the lunar surface.
