Today, December 28th, 2024, the Moon is currently in its Waning phase, visible at 8% and decreasing as we approach the final days of the lunar month. Only two days remain until the next New Moon phase arrives on December 30th.
According to the Instituto Nacional de Meteorologia (INMET), the calendar for lunar phases throughout December has provided skywatchers with plenty to admire. The lunar month kicked off with the New Moon on December 1st at 3:22 AM, followed by the Waxing phase on December 8th at 12:27 PM and the Full Moon on December 15th at 6:02 AM, and the Waning phase, which began on December 22nd at 7:19 PM.
Understanding how the lunar phases work reveals fascinating aspects of our celestial neighbor's behavior. The lunation, or lunar month, lasts on average about 29.5 days, during which the Moon transitions through its four primary phases: New, Waxing, Full, and Waning. Each phase approximately lasts around seven days, presenting varying forms depending on its position relative to the Earth and Sun.
NASA explains it simply: "Our Moon does not shine; it reflects the light of the Sun." This statement offers clarity about the mechanics behind lunar visibility, which fluctuates depending on the Moon's orientation concerning the Earth and the Sun.
The current Waning phase is characterized by the Moon's decreasing illumination as it approaches the New Moon. This form usually resembles the letters 'C' and 'D,' displaying differently based on whether one is observing from the Southern or Northern Hemisphere. The Waning Moon presents itself as less illuminated post-Full Moon and transitions toward complete obscurity before the New Moon.
An intriguing element to note is the Moon's consistent distance from Earth, which measures approximately 363,314.22 kilometers. While observers from different hemispheres view the Moon differently, fundamentally, it remains the same celestial body, albeit appearing inverted to viewers below the equator compared to those above it. This inversion is notable because we only see one side of the Moon. Its rotation around its axis corresponds precisely with its orbit around Earth, leading to this phenomenally unique perspective.
Looking forward, the next significant occurrence for Luna aficionados is the New Moon on December 30th at 7:27 PM. This phase marks the start of the new lunar month and presents fresh opportunities for observation and admiration, bringing the lunar festivities to their finale for this year.
Finally, the Moon continues to captivate humanity as it influences various cultures across the globe. Each phase presents opportunities for engagement, reflection, and novel observations. Observing the Moon not only enriches our scientific knowledge but also connects us to countless traditions shaped by this timeless celestial marvel. Skywatchers are encouraged to pay attention to these lunar transitions as 2024 draws to a close, as each lunar phase tells its own unique story about the universe surrounding us.
