The moon phase on your birthday is believed by many cultures to influence your personality. Find out what phase the moon was in when you were born.
New Moon
Waxing Crescent
First Quarter
Waxing Gibbous
Full Moon
Waning Gibbous
Last Quarter
Waning Crescent
The moon goes through 8 distinct phases during its 29.5-day cycle (synodic month). We calculate the exact position in the lunar cycle for any given date.
Each phase has its own characteristics and meanings in various cultural and spiritual traditions.
The 8 moon phases are: New Moon, Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Last Quarter, and Waning Crescent. Each phase represents a different amount of the moon's illuminated surface visible from Earth as it orbits our planet.
A complete lunar cycle (also called a synodic month) lasts approximately 29.5 days. This is the time it takes for the moon to go through all 8 phases and return to the same phase. This cycle has been used as the basis for many calendars throughout human history.
While there is no scientific evidence that moon phases affect personality, many cultures and spiritual traditions believe the moon phase at birth can influence character traits and life paths. Astrology associates each moon phase with different personality characteristics, such as new moon babies being natural leaders and full moon babies being expressive and emotional.
A waxing moon is when the illuminated portion of the moon is increasing (growing from New Moon to Full Moon). A waning moon is when the illuminated portion is decreasing (shrinking from Full Moon to New Moon). 'Waxing' means growing, and 'waning' means diminishing.
Moon phase is calculated based on the moon's position relative to the Earth and Sun. The calculation involves determining how many days have passed since the last new moon and dividing by the lunar cycle length (29.53 days). This gives a number between 0 and 1, which corresponds to specific phases: 0 is New Moon, 0.25 is First Quarter, 0.5 is Full Moon, and 0.75 is Last Quarter.